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https://www.readbyqxmd.com/read/29223098/trisubstituted-barbiturates-and-thiobarbiturates-synthesis-and-biological-evaluation-as-xanthine-oxidase-inhibitors-antioxidants-antibacterial-and-anti-proliferative-agents
#1
Joana Figueiredo, João L Serrano, Eunice Cavalheiro, Leena Keurulainen, Jari Yli-Kauhaluoma, Vânia M Moreira, Susana Ferreira, Fernanda C Domingues, Samuel Silvestre, Paulo Almeida
Barbituric and thiobarbituric acid derivatives have become progressively attractive to medicinal chemists due to their wide range of biological activities. Herein, different series of 1,3,5-trisubstituted barbiturates and thiobarbiturates were prepared in moderate to excellent yields and their activity as xanthine oxidase inhibitors, antioxidants, antibacterial agents and as anti-proliferative compounds was evaluated in vitro. Interesting bioactive barbiturates were found namely, 1,3-dimethyl-5-[1-(2-phenylhydrazinyl)ethylidene]pyrimidine-2,4,6(1H,3H,5H)-trione (6c) and 1,3-dimethyl-5-[1-[2-(4-nitrophenyl)hydrazinyl]ethylidene]pyrimidine-2,4,6(1H,3H,5H)-trione (6e), which showed concomitant xanthine oxidase inhibitory effect (IC50 values of 24...
November 27, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29223059/a-highly-selective-fluorescence-sensing-platform-for-nanomolar-hg-ii-detection-based-on-cytosine-derived-quantum-dot
#2
Liang Luo, Ting Song, Haoqiang Wang, Qunhui Yuan, Shenghai Zhou
Inspired by low toxicity and good biocompatibility of biomass derived quantum dot (QD), we herein developed a cytosine derived quantum dot, namely cyt-dot, via a one-step hydrothermal synthesis. The as-prepared cyt-dot emits blue fluorescence (FL) containing abundant oxygen (20.6at.%) and nitrogen (24.1at.%) contents. The cyt-dot based sensing platform shows exclusive selectivity for Hg(II) while being insensitive towards Fe(III) and Ag(I), which are important interference that usually cannot be ruled out. The detection limit for Hg(II) is of 11nM, which is very close to the guideline value of 10nM allowed by the U...
November 22, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29223038/polymer-matrix-of-fiber-reinforced-composites-changes-in-the-semi-interpenetrating-polymer-network-during-the-shelf-life
#3
Aftab A Khan, Abdulaziz A Al-Kheraif, Abdullah M Al-Shehri, Eija Säilynoja, Pekka K Vallittu
This laboratory study was aimed to characterize semi-interpenetrating polymer network (semi-IPN) of fiber-reinforced composite (FRC) prepregs that had been stored for up to two years before curing. Resin impregnated prepregs of everStick C&B (StickTech-GC, Turku, Finland) glass FRC were stored at 4°C for various lengths of time, i.e., two-weeks, 6-months and 2-years. Five samples from each time group were prepared with a light initiated free radical polymerization method, which were embedded to its long axis in self-curing acrylic...
November 26, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29223015/thiamine-accumulation-and-thiamine-triphosphate-decline-occur-in-parallel-with-atp-exhaustion-during-postmortem-aging-of-pork-muscles
#4
S Muroya, M Oe, K Ojima
We aimed to clarify the mechanisms affecting postmortem thiamine and its phosphoester contents in major edible pork muscles, namely the longissimus lumborum (LL) in addition to vastus intermedius (VI). Metabolomic analysis by capillary electrophoresis-time of flight mass spectrometry revealed that the level of thiamine triphosphate (ThTP), approximately 1.8-fold higher in LL than in VI muscle at 0h postmortem, declined in the first 24h, resulting in an undetectable level at 168h postmortem in both muscles. In contrast, the thiamine content in both muscles increased after 24h postmortem during the aging process...
December 2, 2017: Meat Science
https://www.readbyqxmd.com/read/29222971/the-divergent-impact-of-catechol-o-methyltransferase-comt-val158met-genetic-polymorphisms-on-executive-function-in-adolescents-with-discrete-patterns-of-childhood-adversity
#5
Huihui Zhang, Jie Li, Bei Yang, Tao Ji, Zhouting Long, Qiquan Xing, Di Shao, Huayu Bai, Jiwei Sun, Fenglin Cao
PURPOSE: Catechol-O-methyltransferase (COMT) Val158Met functional polymorphisms play a crucial role in the development of executive function (EF), but their effect may be moderated by environmental factors such as childhood adversity. The present study aimed at testing the divergent impact of the COMT Val158Met genotype on EF in non-clinical adolescents with discrete patterns of childhood adversity. METHODS: A total of 341 participants completed the Childhood Trauma Questionnaire, the self-reported version of the Behavior Rating Inventory of Executive Function, and self-administered questionnaires on familial function...
November 22, 2017: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/29222854/optical-design-of-an-in-vivo-laparoscopic-lighting-system
#6
Xiaolong Liu, Reza Yazdanpanah Abdolmalaki, Gregory J Mancini, Jindong Tan
This paper proposes an in vivo laparoscopic lighting system design to address the illumination issues, namely poor lighting uniformity and low optical efficiency, existing in the state-of-the-art in vivo laparoscopic cameras. The transformable design of the laparoscopic lighting system is capable of carrying purposefully designed freeform optical lenses for achieving lighting performance with high illuminance uniformity and high optical efficiency in a desired target region. To design freeform optical lenses for extended light sources such as LEDs with Lambertian light intensity distributions, we present an effective and complete freeform optical design method...
December 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29222783/culture-of-mouse-giant-central-nervous-system-synapses-and-application-for-imaging-and-electrophysiological-analyses
#7
Dimitar Dimitrov, Laurent Guillaud, Kohgaku Eguchi, Tomoyuki Takahashi
Primary neuronal cell culture preparations are widely used to investigate synaptic functions. This chapter describes a detailed protocol for the preparation of a neuronal cell culture in which giant calyx-type synaptic terminals are formed. This chapter also presents detailed protocols for utilizing the main technical advantages provided by such a preparation, namely, labeling and imaging of synaptic organelles and electrophysiological recordings directly from presynaptic terminals.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222781/cell-enumeration-assays-application-of-the-mtt-and-sulforhodamine-b-assays-to-lipopolysaccharide-stimulated-neonatal-rodent-microglia
#8
Laura Facci, Stephen D Skaper
Glial cell activation, in particular microglia, plays an important role in the pathogenesis of various neurodegenerative disorders as well as in chronic and neuropathic pain. This chapter compares two established cell enumeration assays, namely, the colorimetric 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide assay and the protein-binding sulforhodamine B assay for microglia as a function of culture condition and activation state. The pros and cons of each are then described.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222768/thai-norms-for-name-image-and-category-agreement-object-familiarity-visual-complexity-manipulability-and-age-of-acquisition-for-480-color-photographic-objects
#9
A J Benjamin Clarke, Jason D Ludington
Normative databases containing psycholinguistic variables are commonly used to aid stimulus selection for investigations into language and other cognitive processes. Norms exist for many languages, but not for Thai. The aim of the present research, therefore, was to obtain Thai normative data for the BOSS, a set of 480 high resolution color photographic images of real objects (Brodeur et al. in PLoS ONE 5(5), 2010.  https://doi.org/10.1371/journal.pone.0010773 ). Norms were provided by 584 Thai university students on eight dimensions: name agreement, object familiarity, visual complexity, category agreement, image agreement, two types of manipulability (graspability and mimeability), and age of acquisition...
December 8, 2017: Journal of Psycholinguistic Research
https://www.readbyqxmd.com/read/29222717/correction-to-peak-stresses-shift-from-femoral-tunnel-aperture-to-tibial-tunnel-aperture-in-lateral-tibial-tunnel-acl-reconstructions-a-3d-graft-bending-angle-measurement-and-finite-element-analysis
#10
Hans Van Der Bracht, Thomas Tampere, Pieter Beekman, Alexander Schepens, Wouter Devriendt, Michiel Cromheecke, Peter Verdonk, Jan Victor
Unfortunately, one of the co-author's name was missed in the original online publication of this article. The name should be included as sixth author in the author group.
December 8, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29222687/chrysophyllum-cainito-apple-star-a-fruit-with-gastroprotective-activity-in-experimental-ulcer-models
#11
Roseane Leandra da Rosa, Camila Leandra de Almeida, Lincon Bordigon Somensi, Thaise Boeing, Luisa Nathália Bolda Mariano, Clarissa de Medeiros Amorim Krueger, Priscila de Souza, Valdir Cechinel Filho, Luisa Mota da Silva, Sérgio Faloni de Andrade
The gastroprotective potential of the methanolic extracts from peels (MEPe), seeds (MESe) and pulp (MEPu) of Chrysophyllum cainito L. (Sapotaceae) fruits was evaluated in mice using ethanol/HCl- and indomethacin-induced ulcer, as well as the antiulcer effect of the juice and flour from this fruit. The lowest oral gastroprotective dose of MEPe, MESe and MEPu against ethanol/HCl was 3, 3 and 10 mg/kg, respectively. Moreover, all extracts increased mucin secretion at 176, 198 and 193%. Intraperitoneal administration of MEPe (0...
December 8, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/29222333/structural-determinants-of-bacterial-lytic-polysaccharide-monooxygenase-functionality
#12
Zarah Forsberg, Bastien Bissaro, Jonathan Gullesen, Bjørn Dalhus, Gustav Vaaje-Kolstad, Vincent G H Eijsink
Bacterial lytic polysaccharide monooxygenases (LPMO10s) use redox chemistry to cleave glycosidic bonds in the two foremost recalcitrant polysaccharides found in nature, namely cellulose and chitin. Analysis of correlated mutations revealed that the substrate-binding and copper-containing surface of LPMO10s comprises a network of coevolved residues and interactions, whose roles in LPMO functionality are unclear. Here, we mutated a subset of these correlated residues in a newly characterized C1/C4-oxidizing LPMO10 from Micromonospora aurantiaca (MaLPMO10B) to the corresponding residues in strictly C1-oxidizing LPMO10s...
December 8, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29222275/the-mutational-landscape-of-chronic-lymphocytic-leukemia-and-its-impact-on-prognosis-and-treatment
#13
REVIEW
Gianluca Gaidano, Davide Rossi
The typical genome of chronic lymphocytic leukemia (CLL) carries ∼2000 molecular lesions. Few mutations recur across patients at a frequency >5%, whereas a large number of biologically and clinically uncharacterized genes are mutated at lower frequency. Approximately 80% of CLL patients carry at least 1 of 4 common chromosomal alterations, namely deletion 13q14, deletion 11q22-23, deletion 17p12, and trisomy 12. Knowledge of the CLL genome has translated into the availability of molecular biomarkers for prognosis and treatment prediction...
December 8, 2017: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/29222266/impact-of-bone-disease-and-pain-in-thalassemia
#14
REVIEW
Antonio Piga
Conventional treatment of thalassemia, namely regular blood transfusion and iron chelation, improves perspectives and quality of life; however, successful treatment leads to more time in which long-term complications such as bone disease can develop. Thalassemia bone disease (TBD) is unique: all aspects, from bone anatomy and bone quality to mineral density, may be affected, with important morbidity including osteoporosis, fractures, spinal deformities, nerve compression, and pain. Clinical presentations include growth impairment, rickets-like features, back pain, spinal deformities, any sign of nerve compression, severe osteoporosis, and fragility fractures...
December 8, 2017: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/29222186/new-splicing-variants-of-mitochondrial-rho-gtpase-1-miro1-transport-peroxisomes
#15
Kanji Okumoto, Tatsuaki Ono, Ryusuke Toyama, Ayako Shimomura, Aiko Nagata, Yukio Fujiki
Microtubule-dependent long-distance movement of peroxisomes occurs in mammalian cells. However, its molecular mechanisms remain undefined. In this study, we identified three distinct splicing variants of human mitochondrial Rho GTPase-1 (Miro1), each containing amino acid sequence insertions 1 (named Miro1-var2), 2 (Miro1-var3), and both 1 and 2 (Miro1-var4), respectively, at upstream of the transmembrane domain. Miro1-var4 and Miro1-var2 are localized to peroxisomes in a manner dependent on the insertion 1 that is recognized by the cytosolic receptor Pex19p...
December 8, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/29222014/preparation-of-purified-fractions-for-polysaccharides-from-monetaria-moneta-linnaeus-and-comparison-their-characteristics-and-antioxidant-activities
#16
Jun Yuan, Shuxian Chen, Liping Wang, Tingting Xu, Xu Shi, Yi Jing, Haijiang Zhang, Yange Huang, Ying Xu, Dong Li, Xing Chen, Jianhui Chen, Qingping Xiong
The aim of this paper was to prepare purified fractions of polysaccharides from Monetaria moneta Linnaeus and further compare their characteristics and antioxidant activities. Firstly, three novel purified fractions, named MM-P1, MM-P2 and MM-P3, were successfully prepared by a DEAE-Sepharose fast-flow column. Then, their characteristics were compared using chemical testing, FT-IR, GC and HPGPC. The results suggested that MM-P3 had higher molecular weights than MM-P1 and MM-P2. MM-P1 was consisted of glucose, MM-P2 was consisted of glucose and xylose, and MM-P3 was comprised of glucose, xylose and mannose...
December 5, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29221926/plasma-protein-profiling-of-patients-with-intraductal-papillary-mucinous-neoplasm-of-the-pancreas-as-potential-precursor-lesions-of-pancreatic-cancer
#17
Maria Ilies, Praveen Kumar Sappa, Cristina Adela Iuga, Felicia Loghin, Manuela Gesell Salazar, Frank Ulrich Weiss, Georg Beyer, Markus M Lerch, Uwe Völker, Julia Mayerle, Elke Hammer
Efforts for the early diagnosis of the pancreatic ductal adenocarcinoma (PDAC) have recently been driven to one of the precursor lesions, namely intraductal papillary mucinous neoplasm of the pancreas (IPMN). Only a few studies have focused on IPMN molecular biology and its overall progression to cancer. Therefore, IPMN lacks comprehensive characterization which makes its clinical management controversial. In this study, we characterized plasma proteins in the presence of IPMNs in comparison to healthy controls, chronic pancreatitis, and PDAC by a proteomics approach using data-independent acquisition based mass spectrometry...
December 5, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29221883/anti-neuroinflammatory-effects-of-sesquiterpenoids-isolated-from-nardostachys-jatamansi
#18
Chi-Su Yoon, Kwan-Woo Kim, Sang-Chan Lee, Youn-Chul Kim, Hyuncheol Oh
Two new nardosinone-type sesquiterpenoids, namely kanshone J (1) and kanshone K (2) along with seven known terpenoids (3-9) were isolated from the rhizomes and roots of Nardostachys jatamansi DC (Valerianaceae). The structures of these compounds were determined mainly by analysis of 1D-, 2D-NMR and MS data. In addition, the absolute configuration of compound 1 was assigned by application of the modified Mosher's method. In an initial assay to evaluate their anti-neuroinflammatory effects, compounds 1-5 and 9 exhibited dose-dependent inhibitory effects on lipopolysaccharide (LPS)-induced nitric oxide (NO) production in BV2 cells, with IC50 values ranging from 2...
November 24, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29221873/modeling-and-prediction-of-regional-municipal-solid-waste-generation-and-diversion-in-canada-using-machine-learning-approaches
#19
Miyuru Kannangara, Rahul Dua, Leila Ahmadi, Farid Bensebaa
The main objective of this study was to develop models for accurate prediction of municipal solid waste (MSW) generation and diversion based on demographic and socio-economic variables, with planned application of generating Canada-wide MSW inventories. Models were generated by mapping residential MSW quantities with socio-economic and demographic parameters of 220 municipalities in the province of Ontario, Canada. Two machine learning algorithms, namely decision trees and neural networks, were applied to build the models...
December 5, 2017: Waste Management
https://www.readbyqxmd.com/read/29221871/investigation-on-paper-cup-waste-degradation-by-bacterial-consortium-and-eudrillus-eugeinea-through-vermicomposting
#20
Karthika Arumugam, Seenivasagan Renganathan, Babalola Olubukola Oluranti, Vasanthy Muthunarayanan
Disposable Paper cups are a threat to the environment and are composed of 90% high strength paper with 5% thin coating of polyethylene. This polyethylene prevents the paper cup from undergoing degradation in the soil. Hence, in the present study two different approaches towards the management of paper cup waste through vermicomposting technology has been presented. The experimental setup includes 2 plastic reactors namely Vermicompost (VC) (Cow dung + Paper cup waste + Earthworm (Eudrillus eugeinea)) and Vermicompost with bacterial consortium (VCB) (Cow dung + Paper cup waste + Eudrillus eugeinea + Microbial consortia such as Bacillus anthracis, B...
December 5, 2017: Waste Management
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