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https://www.readbyqxmd.com/read/29240396/casting-a-wider-net-rational-synthesis-design-of-low-dimensional-bulk-materials
#1
Katherine A Benavides, Iain W H Oswald, Julia Y Chan
The discovery of novel magnetic and electronic properties in low-dimensional materials has led to the pursuit of hierarchical materials with specific substructures. Low-dimensional solids are highly anisotropic by nature and show promise in new quantum materials leading to exotic physical properties not realized in three-dimensional materials. We have the opportunity to extend our synthetic strategy of the flux-growth method to designing single crystalline low-dimensional materials in bulk. The goal of this Account is to highlight the synthesis and physical properties of several low-dimensional intermetallic compounds containing specific structural motifs that are linked to desirable magnetic and electrical properties...
December 14, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/29239690/antibody-drug-conjugates-design-and-development-for-therapy-and-imaging-in-and-beyond-cancer-labex-mabimprove-industrial-workshop-july-27-28-2017-tours-france
#2
Camille Martin, Claire Kizlik-Masson, André Pèlegrin, Hervé Watier, Marie-Claude Viaud-Massuard, Nicolas Joubert
The annual "Antibody Industrial Symposium", co organized by LabEx MAbImprove, MabDesign and Polepharma, was held in Tours, France on June 27-28, 2017. The focus was on antibody-drug-conjugates (ADCs), new entities which realize the hope of Paul Ehrlich's magic bullet. ADCs result from the bioconjugation of a highly cytotoxic drug to a selective monoclonal antibody, which acts as a vector. Building on knowledge gained during the development of three approved ADCs, brentuximab vedotin (Adcetris®), ado trastuzumab emtansine (Kadcyla®) and inotuzumab ozogamicin (Besponsa®), and the many ADCs in development, this meeting addressed strategies and the latest innovations in the field from fundamental research to manufacturing...
December 14, 2017: MAbs
https://www.readbyqxmd.com/read/29230233/whole-genome-sequencing-of-fusarium-fujikuroi-provides-insight-into-the-role-of-secretory-proteins-and-cell-wall-degrading-enzymes-in-causing-bakanae-disease-of-rice
#3
Bishnu M Bashyal, Kirti Rawat, Sapna Sharma, Deepika Kulshreshtha, S Gopala Krishnan, Ashok K Singh, Himanshu Dubey, Amolkumar U Solanke, T R Sharma, Rashmi Aggarwal
Fusarium fujikuroi causing bakanae disease has emerged as one of the major pathogen of rice across the world. The study aims to comparative genomic analysis of Fusarium fujikuroi isolates and identification of the secretary proteins of the fungus involved in rice pathogenesis. In the present study, F. fujikuroi isolate "F250" was sequenced with an assembly size of 42.47 Mb providing coverage of 96.89% on reference IMI58289 genome. A total of 13,603 protein-coding genes were predicted from genome assembly. The average gene density in the F...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29227091/a-vuv-excited-and-ch2cl2-h2o-amplified-ionization-coupled-mass-spectrometry-for-oxygenated-organics-analysis
#4
Bo Yang, Haixu Zhang, Jinian Shu, Pengkun Ma, Peng Zhang, Jingyun Huang, Zhen Li, Ce Xu
The mass spectrometry analysis of oxygenated volatile organic compounds (OVOCs) remains challenging due to their limited ionization efficiencies. In this study, we surprisingly found that, under VUV excitation, a gaseous mixture of CH2Cl2/H2O/analyte (OVOCs) in N2 buffer generated large amounts of H3O+ and protonated analyte even when the photon energy was lower than the ionization energy of the neutral species involved. In contrast to those obtained with VUV photoionization alone, the signal intensities of oxygenated organics can be amplified by more than three orders of magnitude...
December 11, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29223890/gold-core-ceria-shell-based-redox-active-nanozyme-mimicking-the-biological-multienzyme-complex-phenomenon
#5
Stuti Bhagat, N V Srikanth Vallabani, Vaithiyalingam Shutthanandan, Mark Bowden, Ajay S Karakoti, Sanjay Singh
Catalytically active individual gold (Au) and cerium oxide (CeO2) nanoparticles (NPs) are well known to exhibit specific enzyme-like activities, such as natural catalase, oxidase, superoxide dismutase, and peroxidase enzymes. These activities have been maneuvered to design several biological applications such as immunoassays, glucose detection, radiation and free radical protection and tissue engineering. In biological systems, multienzyme complexes are involved in catalyzing important reactions of essential metabolic processes such as respiration, biomolecule synthesis, and photosynthesis...
December 7, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29220729/comparison-of-dynamic-cervical-implant-versus-anterior-cervical-discectomy-and-fusion-for-the-treatment-of-single-level-cervical-degenerative-disc-disease-a-five-year-follow-up
#6
Ce Zhu, Xi Yang, Lei Wang, Bo-Wen Hu, Li-Min Liu, Lin-Nan Wang, Hao Liu, Yue-Ming Song
OBJECTIVE: To compare clinical and radiographic outcomes of dynamic cervical implant(DCI) with anterior cervical discectomy and fusion(ACDF) in the treatment of single-level cervical degenerative disc disease (CDDD) 5 years after surgery. PATIENTS AND METHODS: Forty-three patients with DCI were matched one-to-one with patients with ACDF based on age, gender, and operative segment in this retrospective study. All patients had been followed up for more than 5 years...
December 5, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29218762/comparison-of-paired-and-single-clinical-placement-models-a-time-use-analysis
#7
Marita Bhagwat, Ronelle Hewetson, Lee Jones, Anne Hill, Jennifer Nunn, Rachel Tosh, Louise Cahill
BACKGROUND: To meet rising clinical placement demand caused by increasing health student numbers, the use of paired (two students) rather than single (one student) placement models has been proposed. There is, however, limited research available to inform placement providers about the relative effects of both models on healthcare services, including patient- and non-patient-related activities and patient occasions of service. AIMS: To investigate a key clinical question: Does clinical educator (supervisor) and student time use differ during paired placements compared with single placements? Also to examine the satisfaction levels of clinical educators (CEs) and students with paired and single clinical placement models...
December 7, 2017: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/29201581/contrast-enhancement-of-aneurysm-sac-post-pipeline-treatment-interpreted-as-recanalization
#8
Annie J Tsay, Sara Langan, Scott Simon
Multiple imaging modalities are available to evaluate aneurysms post-flow diverter (FD) placement. Though digital subtraction angiography (DSA) is the gold standard imaging modality post-FD placement, it is not perfect, and neither are other techniques, including contrast-enhanced magnetic resonance angiography (CE-MRA) and magnetic resonance imaging (MRI). We present a case of a 73-year-old woman with a right internal carotid artery (ICA) aneurysm treated with a pipeline embolization device (PED). Initial follow-up post-PED placement by three-dimensional time-of-flight (3D-TOF) MRA demonstrated aneurysm occlusion, which was confirmed by computed tomography angiography (CTA) and CE-MRA in subsequent follow-up appointments...
September 29, 2017: Curēus
https://www.readbyqxmd.com/read/29200274/shape-evolution-of-biconcave-djurleite-cu1-94s-nanoplatelets-produced-from-cuins2-nanoplatelets-by-cation-exchange
#9
Yang Liu, Maixian Liu, Mark T Swihart
Development of nanomaterials of previously unavailable shapes and compositions continues to be a key need and interest in nanotechnology. Here, we report the preparation of unique biconcave djurleite Cu1.94S nanoplatelets (NPls) from template CuInS2 (CIS) NPls via a cation exchange (CE) reaction. Upon initiation of the CE reaction, the In3+ ions diffuse out of the CIS crystal lattice and the remaining copper sulfide adopts the djurleite phase almost instantly. This rapid phase transition produces numerous vacancies and defects before Cu+ ions can diffuse into the nanostructures...
December 4, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29182623/immunotherapeutic-efficacy-of-liposome-encapsulated-refined-allergen-vaccines-against-dermatophagoides-pteronyssinus-allergy
#10
Urai Chaisri, Anchalee Tungtrongchitr, Nitaya Indrawattana, Panisara Meechan, Watchara Phurttikul, Natt Tasaniyananda, Nawannaporn Saelim, Wanpen Chaicumpa, Nitat Sookrung
Allergen specific immunotherapy (AIT) can modulate the allergic response causing a long-term symptom subsidence/abolishment which leads to reduced drug use and prevention of new sensitization. AIT of house dust mite allergy (HDM) using the mite crude extract (CE) as the therapeutic agent is not only less effective than the AIT for many other allergens, but also frequently causes adverse effects during the treatment course. In this study, mouse model of Dermatophagoides pteronyssinus (Dp) allergy was invented for testing therapeutic efficacies of intranasally administered liposome (L) encapsulated vaccines made of single Dp major allergens (L-Der p 1, L-Der p 2), combined allergens (L-Der p 1 and Der p 2), and crude Dp extract (L-CE)...
2017: PloS One
https://www.readbyqxmd.com/read/29178793/symmetry-effects-on-attenuation-factors-in-graphene-based-molecular-junctions
#11
Qian Zhang, Shuhui Tao, Ruowei Yi, Chunhui He, Ce Zhou Zhao, Weitao Su, Alexander Smogunov, Yannick J Dappe, Richard J Nichols, Li Yang
The unique structural and electronic characteristics of graphene make it an attractive contact for fundamental single molecule electrical studies. With this in mind, we have probed here the electrical conductance of a molecular junction based on alkane-diamine chains sandwiched between a gold and a graphene electrode. Using an STM based break junction method combined with Density Functional Theory based transport calculations, we demonstrate that the resulting attenuation factor turns out to be much lower when compared to the standard molecular junction between two gold electrodes...
November 27, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29177549/different-infarction-patterns-in-patients-with-aortic-atheroma-compared-to-those-with-cardioembolism-or-large-artery-atherosclerosis
#12
Seung Woo Kim, Young Dae Kim, Hyuk-Jae Chang, Geu-Ru Hong, Chi Young Shim, Seok Jong Chung, Jin Yong Hong, Tae-Jin Song, Dongbeom Song, Oh Young Bang, Ji Hoe Heo, Hyo Suk Nam
Aortic atheroma is a known cause of ischemic stroke. However, it is unclear whether ischemic stroke is caused by emboli from aortic atheroma or by accompanying atherosclerosis. In this study, we evaluated lesion patterns of patients with complex aortic plaque (CAP) to assume the underlying pathophysiology. Acute ischemic stroke patients who underwent transesophageal echocardiography were included. CAP was defined as a plaque in the proximal aorta ≥ 4 mm thick or with a mobile component. The diffusion-weighted imaging lesion patterns of patients with CAP were compared to those with large arterial atherosclerosis (LAA) or cardioembolism (CE)...
November 24, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/29177064/efficacy-of-capsule-endoscopy-in-patients-with-cirrhosis-for-the-diagnosis-of-upper-gastrointestinal-lesions-and-small-bowel-abnormalities-a-study-protocol-for-prospective-interventional-study
#13
Yoshinori Iwata, Hiroki Nishikawa, Hirayuki Enomoto, Kazunori Yoh, Akio Ishii, Yukihisa Yuri, Noriko Ishii, Yuho Miyamoto, Kunihiro Hasegawa, Chikage Nakano, Ryo Takata, Takashi Nishimura, Nobuhiro Aizawa, Yoshiyuki Sakai, Naoto Ikeda, Tomoyuki Takashima, Hiroko Iijima, Shuhei Nishiguchi
Introduction and aims: The role of capsule endoscopy (CE) in patients with liver cirrhosis (LC) has yet to be established; however, it is likely that it will remain a valuable diagnostic modality in several groups of patients with LC. The primary aims of the current prospective interventional study are to examine the prevalence for small bowel lesions and transit time of CE in the gastrointestinal tract in patients with LC with oesophageal varices (EVs) requiring endoscopic therapies...
2017: BMJ Open Gastroenterology
https://www.readbyqxmd.com/read/29171243/-medication-rules-for-prescriptions-containing-pterocephali-herba-based-on-data-mining
#14
Fang Zuo, Zhi-Cheng Wei, Ce Tang, Wen-Qian Wang, Dong Tong, Xian-Li Meng, Yi Zhang
This study was aimed to discuss and analyze the medication rules for prescriptions containing Pterocephali Herba in Chinese Medical Encyclopedia - Tibetan Medicine, Tibetan Medicine Prescription Modern Research and Clinical Application, and Interpretation of Common Tibetan Medicines based on the collection of Pterocephali Herba and by using the "Traditional Chinese Medicine Inheritance Support system(V2.0.1)",with the use of association rules, apriori algorithm and other data mining methods. The frequency of single drug, the frequency of drug combination, the association rule and the combination of core drugs were analyzed...
August 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29167851/what-regulates-the-catalytic-activities-in-age-catalysis-an-answer-from-quantum-mechanics-molecular-mechanics-simulations
#15
Yulai Zhang, Hongxing Zhang, Qingchuan Zheng
The AGE superfamily (AGEs) is made up of kinds of isomerase which are very important both physiologically and industrially. One of the most intriguing aspects of AGEs has to do with the mechanism that regulates their activities in single conserved active pocket. In order to clarify the relationship among single conserved active pocket and two activities in AGEs, results for the epimerization activity catalyzed by RaCE and the isomerization activity catalyzed by SeYihS were obtained by using QM/MM umbrella sampling simulations and 2D-FES calculations...
November 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29163424/the-bacillus-subtilis-conjugative-plasmid-pls20-encodes-two-ribbon-helix-helix-type-auxiliary-relaxosome-proteins-that-are-essential-for-conjugation
#16
Andrés Miguel-Arribas, Jian-An Hao, Juan R Luque-Ortega, Gayetri Ramachandran, Jorge Val-Calvo, César Gago-Córdoba, Daniel González-Álvarez, David Abia, Carlos Alfonso, Ling J Wu, Wilfried J J Meijer
Bacterial conjugation is the process by which a conjugative element (CE) is transferred horizontally from a donor to a recipient cell via a connecting pore. One of the first steps in the conjugation process is the formation of a nucleoprotein complex at the origin of transfer (oriT), where one of the components of the nucleoprotein complex, the relaxase, introduces a site- and strand specific nick to initiate the transfer of a single DNA strand into the recipient cell. In most cases, the nucleoprotein complex involves, besides the relaxase, one or more additional proteins, named auxiliary proteins, which are encoded by the CE and/or the host...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29160701/flux-crystal-growth-of-the-re2ru3ge5-re-la-ce-nd-gd-tb-series-and-their-magnetic-and-metamagnetic-transitions
#17
Daniel E Bugaris, Christos D Malliakas, Sergey L Bud'ko, Nicholas P Calta, Duck Young Chung, Mercouri G Kanatzidis
Previously synthesized only as powders, single crystals of the RE2Ru3Ge5 (RE = La, Ce, Nd, Gd, Tb) series of compounds have now been obtained from molten In. These materials crystallize with the U2Co3Si5-type structure in orthorhombic space group Ibam with lattice parameters a ≈ 10.00-9.77 Å (La-Tb), b ≈ 12.51-12.35 Å, and c ≈ 5.92-5.72 Å. The structure is a three-dimensional framework consisting of RuGe5 and RuGe6 units, as well as Ge-Ge zigzag chains. This structure type and those of the other five (Sc2Fe3Si5, Lu2Co3Si5, Y2Rh3Sn5, Yb2Ir3Ge5, and Yb2Pt3Sn5) to compose the RE2T3X5 phase space are discussed in depth...
November 21, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29147852/enhanced-peptide-detection-toward-single-neuron-proteomics-by-reversed-phase-fractionation-capillary-electrophoresis-mass-spectrometry
#18
Sam B Choi, Camille Lombard-Banek, Pablo Muñoz-LLancao, M Chiara Manzini, Peter Nemes
The ability to detect peptides and proteins in single cells is vital for understanding cell heterogeneity in the nervous system. Capillary electrophoresis (CE) nanoelectrospray ionization (nanoESI) provides high-resolution mass spectrometry (HRMS) with trace-level sensitivity, but compressed separation during CE challenges protein identification by tandem HRMS with limited MS/MS duty cycle. Here, we supplemented ultrasensitive CE-nanoESI-HRMS with reversed-phase (RP) fractionation to enhance identifications from protein digest amounts that approximate to a few mammalian neurons...
November 16, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/29139297/direct-exosome-quantification-via-bivalent-cholesterol-labeled-dna-anchor-for-signal-amplification
#19
Fang He, Hui Liu, Xinggang Guo, Bin-Cheng Yin, Bang-Ce Ye
Exosomes, as an important subpopulation of extracellular vesicles (EVs), play an important role in intercellular communications in various important pathophysiological processes, especially cancer-related. However, reliable and convenient quantitative methods for their determination are still technically challenging. In this study, we developed an efficient and direct method by combining immunoaffinity and lipid membrane surface modification into a single platform for specific isolation and accurate quantification of exosomes...
November 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29136796/a-multi-purpose-tool-for-food-inspection-simultaneous-determination-of-various-classes-of-preservatives-and-biogenic-amines-in-meat-and-fish-products-by-lc-ms
#20
Luciano Molognoni, Heitor Daguer, Leandro Antunes de Sá Ploêncio, Juliano De Dea Lindner
This paper describes an innovative fast and multipurpose method for the chemical inspection of meat and fish products by liquid chromatography-tandem mass spectrometry. Solid-liquid extraction and low temperature partitioning were applied to 17 analytes, which included large bacteriocins (3.5kDa) and small molecules (organic acids, heterocyclic compounds, polyene macrolides, alkyl esters of the p-hydroxybenzoic acid, aromatic, and aliphatic biogenic amines and polyamines). Chromatographic separation was achieved in 10min, using stationary phase of di-isopropyl-3-aminopropyl silane bound to hydroxylated silica...
February 1, 2018: Talanta
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