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https://www.readbyqxmd.com/read/28933495/interfacial-structure-and-structural-forces-in-mixtures-of-ionic-liquid-with-a-polar-solvent
#1
Samuel W Coles, Alexander M Smith, Maxim V Fedorov, Florian Hausen, Susan Perkin
Many applications of ionic liquids involve their mixtures with neutral molecular solvents. The chemical physics of these high-concentration electrolytes, in particular at interfaces, still holds many challenges. In this contribution we begin to unravel the relationship between measurements of structural ('solvation') forces in mixtures of ionic liquid with polar solvent and the corresponding structure determined by molecular dynamics simulations of the same mixtures. In order to make the quantitative link between experiments with mica surfaces and simulations with fixed-charge surfaces, we present an experimental procedure for determining the effective surface charge on mica in ionic liquid...
September 21, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28932644/romidepsin-alone-or-in-combination-with-anti-cd20-chimeric-antigen-receptor-expanded-natural-killer-cells-targeting-burkitt-lymphoma-in-vitro-and-in-immunodeficient-mice
#2
Yaya Chu, Ashlin Yahr, Brian Huang, Janet Ayello, Matthew Barth, Mitchell S Cairo
Facilitating the development of alternative targeted therapeutic strategies is urgently required to improve outcome or circumvent chemotherapy resistance in children, adolescents, and adults with recurrent/refractory de novo mature B-cell (CD20) non-Hodgkin lymphoma, including Burkitt lymphoma (BL). Romidepsin, a histone deacetylase inhibitor (HDACi), has been used to treat cutaneous T-cell lymphoma. We have demonstrated the significant anti-tumor effect of anti-CD20 chimeric antigen receptor (CAR) modified expanded peripheral blood natural killer (exPBNK) against rituximab-sensitive and -resistant BL...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28928439/polymorphisms-in-mica-but-not-in-depdc5-hcp5-or-pnpla3-are-associated-with-chronic-hepatitis-c-related-hepatocellular-carcinoma
#3
Hoang Hai, Akihiro Tamori, Le Thi Thanh Thuy, Kanako Yoshida, Atsushi Hagihara, Etsushi Kawamura, Sawako Uchida-Kobayashi, Hiroyasu Morikawa, Masaru Enomoto, Yoshiki Murakami, Norifumi Kawada
Recently, the MICA rs2596542 and DEPDC5 rs1012068 variants in Japanese individuals as well as the HCP5 rs2244546 and PNPLA3 rs738409 variants in European individuals have been found associated with hepatocellular carcinoma (HCC). The present study determined which single nucleotide polymorphism (SNP) is the most predictive for developing hepatitis C virus (HCV)-related HCC in a Japanese cohort. Of the 4 SNPs analysed, only the MICA genotypes were significantly associated with development of HCC (p = 0.0185)...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28925951/transparent-pullulan-mica-nanocomposite-coatings-with-outstanding-oxygen-barrier-properties
#4
Ilke Uysal Unalan, Derya Boyacı, Silvia Trabattoni, Silvia Tavazzi, Stefano Farris
This study presents a new bionanocomposite coating on poly(ethylene terephthalate) (PET) made of pullulan and synthetic mica. Mica nanolayers have a very high aspect ratio (α), at levels much greater than that of conventional exfoliated clay layers (e.g., montmorillonite). A very small amount of mica (0.02 wt %, which is ϕ ≈ 0.00008) in pullulan coatings dramatically improved the oxygen barrier performance of the nanocomposite films under dry conditions, however, this performance was partly lost as the environmental relative humidity (RH) increased...
September 19, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28925058/the-association-between-mica-micb-polymorphism-and-respiratory-syncytial-virus-infection-in-children
#5
Q Luo, X Guo, S Peng, W Luo, F Tian, P Yu, Y Zou
MICA/MICB gene polymorphisms are related to several cancers and infectious diseases, but there are no reports on the association between MICA/MICB gene polymorphisms and respiratory syncytial virus (RSV) infection. To clarify the association between MICA/MICB gene polymorphisms and infection of RSV in children, we collected fresh blood samples from paediatric patients with and without pneumonia after RSV infection. The MICA/MICB alleles were characterized by PCR sequence-specific primers (PCR-SSP) and PCR sequence-based genotyping (PCR-SBT), and then, the frequency of the MICA/MICB alleles and haplotypes was calculated...
September 18, 2017: International Journal of Immunogenetics
https://www.readbyqxmd.com/read/28921990/disruption-of-asymmetric-lipid-bilayer-models-mimicking-the-outer-membrane-of-gram-negative-bacteria-by-an-active-plasticin
#6
Jean-Philippe Michel, Yingxiong Wang, Irena Kiesel, Yuri Gerelli, Veronique Rosilio
The outer membrane (OM) of Gram-negative bacteria is a complex and asymmetric bilayer that antimicrobial peptides must disrupt in order to provoke the cell lysis. The inner and external leaflets of the OM are mainly composed of phospholipids (PL), and lipopolysaccharide (LPS), respectively. Supported lipid bilayers are interesting model systems to mimic the lipid asymmetric scaffold of the OM and determine the quantitative and mechanistic effect of antimicrobial agents, using complementary physicochemical techniques...
September 18, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28919994/effect-of-entinostat-on-nk-cell-mediated-cytotoxicity-against-osteosarcoma-cells-and-osteosarcoma-lung-metastasis
#7
Simin Kiany, Gangxiong Huang, Eugenie S Kleinerman
There is a crucial need for a new therapeutic approach for osteosarcoma (OS) lung metastasis since this disease remains the main cause of mortality in OS. We previously demonstrated that natural killer (NK) cell therapy has minimal efficacy against OS metastasis. This study determined whether the histone deacetylase inhibitor entinostat could immunosensitize OS cells to NK cell lysis and increases the efficacy of NK cell therapy for OS lung metastasis. Entinostat upregulated ligands for NK cell-activating receptors (major histocompatibility complex [MHC] class I polypeptide-related chain A [MICA] and B [MICB]; UL16 binding proteins 1, 2, 5, and 6; and CD155) on OS cells both in vitro and in vivo and led to more susceptibility to NK cell-mediated cytotoxicity in vitro...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28918079/clogging-of-an-alpine-streambed-by-silt-sized-particles-insights-from-laboratory-and-field-experiments
#8
Jasmin Fetzer, Markus Holzner, Michael Plötze, Gerhard Furrer
Clogging of streambeds by suspended particles (SP) can cause environmental problems, as it can negatively influence, e.g., habitats for macrozoobenthos, fish reproduction and groundwater recharge. This especially applies in the case of silt-sized SP. Until now, most research has dealt with coarse SP and was carried out in laboratory systems. The aims of this study are to examine (1) whether physical clogging by silt-sized SP exhibits the same dynamics and patterns as by sand-sized SP, and (2) the comparability of results between laboratory and field experiments...
September 7, 2017: Water Research
https://www.readbyqxmd.com/read/28915646/interleukin-15-stimulates-natural-killer-cell-mediated-killing-of-both-human-pancreatic-cancer-and-stellate-cells
#9
Jonas R M Van Audenaerde, Jorrit De Waele, Elly Marcq, Jinthe Van Loenhout, Eva Lion, Johan M J Van den Bergh, Ralf Jesenofsky, Atsushi Masamune, Geert Roeyen, Patrick Pauwels, Filip Lardon, Marc Peeters, Evelien L J Smits
Pancreatic ductal adenocarcinoma (PDAC) is the 4(th) leading cause of cancer-related death in Western countries with a 5-year survival rate below 5%. One of the hallmarks of this cancer is the strong desmoplastic reaction within the tumor microenvironment (TME), orchestrated by activated pancreatic stellate cells (PSC). This results in a functional and mechanical shield which causes resistance to conventional therapies. Aiming to overcome this resistance by tackling the stromal shield, we assessed for the first time the capacity of IL-15 stimulated natural killer (NK) cells to kill PSC and pancreatic cancer cells (PCC)...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28890983/van-der-waals-epitaxial-two-dimensional-cdsxse-1-x-semiconductor-alloys-with-tunable-composition-and-application-to-flexible-optoelectronics
#10
Jing Xia, Yun-Xuan Zhao, Lei Wang, Xuan-Ze Li, Yi-Yi Gu, Hua-Qiu Cheng, Xiang-Min Meng
Despite the substantial progress in the development of two-dimensional (2D) materials from conventional layered crystals, it still remains particularly challenging to produce high-quality 2D non-layered semiconductor alloys which may bring in some unique properties and new functions. In this work, the synthesis of well-oriented 2D non-layered CdSxSe(1-x) semiconductor alloy flakes with tunable compositions and optical properties is established. Structural analysis reveals that the 2D non-layered alloys follow an incommensurate van der Waals epitaxial growth pattern...
September 11, 2017: Nanoscale
https://www.readbyqxmd.com/read/28884474/recognition-by-natural-killer-cells-of-n-6-isopentenyladenosine-treated-human-glioma-cell-lines
#11
Elena Ciaglia, Chiara Laezza, Mario Abate, Simona Pisanti, Roberta Ranieri, Alba D'Alessandro, Paola Picardi, Patrizia Gazzerro, Maurizio Bifulco
Cancer cell stress induced by cytotoxic agents promote antitumor immune response. Here we observed that N6-isopentenyladenosine (iPA), an isoprenoid modified adenosine with a well established anticancer activity, was able to induce a significant upregulation of cell surface expression of NKG2D ligands on glioma cells in vitro and xenografted in vivo. Specifically suboptimal doses of iPA (0.1 and 1µM) control the selective upregulation of ULBP2 on p53wt-expressing U343MG and that of MICA/B on p53mut-expressing U251MG cells...
September 7, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28882543/longitudinal-study-of-a-nogo-p3-event-related-potential-component-following-mild-traumatic-brain-injury-in-adults
#12
Gian Candrian, Andreas Müller, Patrizia Dall'Acqua, Kyveli Kompatsiari, Gian-Marco Baschera, Ladislav Mica, Hans-Peter Simmen, Richard Glaab, Javier Fandino, Markus Schwendinger, Christoph Meier, Erika Jasmin Ulbrich, Sönke Johannes
BACKGROUND: Event-related potentials have repeatedly revealed electrophysiological markers of cognitive dysfunction associated with Mild Traumatic Brain Injury (MTBI) and may represent a sensitive tool to guide cognitive rehabilitative interventions. We previously found patients with symptomatic MTBI characterized by smaller P300 (or P3) wave amplitudes in a NoGo-P3 subcomponent in the acute phase of the injury. The goal of this longitudinal study was to investigate whether this early NoGo-P3 subcomponent differs over time in symptomatic MTBI patients and healthy controls...
September 4, 2017: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28878186/monitoring-ion-track-formation-using-in-situ-rbs-c-tof-erda-and-hr-pixe
#13
Marko Karlušić, Stjepko Fazinić, Zdravko Siketić, Tonči Tadić, Donny Domagoj Cosic, Iva Božičević-Mihalić, Ivana Zamboni, Milko Jakšić, Marika Schleberger
The aim of this work is to investigate the feasibility of ion beam analysis techniques for monitoring swift heavy ion track formation. First, the use of the in situ Rutherford backscattering spectrometry in channeling mode to observe damage build-up in quartz SiO₂ after MeV heavy ion irradiation is demonstrated. Second, new results of the in situ grazing incidence time-of-flight elastic recoil detection analysis used for monitoring the surface elemental composition during ion tracks formation in various materials are presented...
September 6, 2017: Materials
https://www.readbyqxmd.com/read/28872763/anion-layering-and-steric-hydration-repulsion-on-positively-charged-surfaces-in-aqueous-electrolytes
#14
Qingyun Hu, Christian Weber, Hsiu-Wei Cheng, Frank Uwe Renner, Markus Valtiner
The molecular structure at charged solid/liquid interfaces is vital for many chemical or electrochemical processes, such as adhesion, catalysis or the stability of colloidal dispersions. How cations influence structural hydration forces and interactions across negatively charged surfaces have been studied in great detail. However, how anions influence structural hydration forces on positively charged surfaces is much less understood. Here we report force versus distance profiles on freshly cleaved mica using Atomic Force Microscopy with silicon tips...
September 5, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28872411/smartphone-photography-utilized-to-measure-wrist-range-of-motion
#15
Eric R Wagner, Megan Conti Mica, Alexander Y Shin
The purpose was to determine if smartphone photography is a reliable tool in measuring wrist movement. Smartphones were used to take digital photos of both wrists in 32 normal participants (64 wrists) at extremes of wrist motion. The smartphone measurements were compared with clinical goniometry measurements. There was a very high correlation between the clinical goniometry and smartphone measurements, as the concordance coefficients were high for radial deviation, ulnar deviation, wrist extension and wrist flexion...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28871002/trichostatin-a-sensitizes-hepatocellular-carcinoma-cells-to-enhanced-nk-cell-mediated-killing-by-regulating-immune-related-genes
#16
Sangsu Shin, Miok Kim, Seon-Jin Lee, Kang-Seo Park, Chang Hoon Lee
BACKGROUND/AIM: Hepatocellular carcinoma (HCC) is the second leading cause of cancer-related death worldwide. The ability of HCC to avoid immune detection is considered one of the main factors making it difficult to cure. Abnormal histone deacetylation is thought to be one of the mechanisms for HCC immune escape, making histone deacetylases (HDACs) attractive targets for HCC treatment. Here, we investigated the effect of trichostatin A (TSA), a highly potent HDAC inhibitor, on HCC (HepG2) gene expression and function...
September 2017: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/28867629/a-nanobiosensing-method-based-on-force-measurement-of-antibody-antigen-interaction-for-direct-detection-of-enterovirus-71-by-the-chemically-modified-atomic-force-microscopic-probe
#17
Chung-Hung Hong, Chung-Fan Hsieh, Chi-Shin Tseng, Wei-Chih Huang, Cheng-Yan Guo, Shiming Lin, Si-Chen Lee
Hand, Foot and mouth disease (HFMD) is a common disease with high infectivity for children, and enterovirus 71 (EV71) is one of the main pathogens to cause the type of illness. Therefore, the aim of this study was to propose a rapid and effective technique for detecting EV71 directly based on the mechanism of biological intermolecular force by using atomic force microscopy (AFM). At first, we coated EV71 particles on the mica surface and made the EV71 antibodies (anti-EV71) fixed on the AFM tip by means of several chemical procedures...
September 1, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28866771/atomic-force-microscopy-analysis-of-extracellular-vesicles
#18
P Parisse, I Rago, L Ulloa Severino, F Perissinotto, E Ambrosetti, P Paoletti, M Ricci, A P Beltrami, D Cesselli, L Casalis
Extracellular vesicles (EVs) are small vesicles ensuring transport of molecules between cells and throughout the body. EVs contain cell type-specific signatures and have been proposed as biomarkers in a variety of diseases. Their small size (<1 μm) and biological and physical functions make them obvious candidates for therapeutic agents in immune therapy, vaccination, regenerative medicine and drug delivery. However, due to the complexity and heterogeneity of their origin and composition, the actual mechanism through which these vesicles exert their functions is still unknown and represents a great biomedical challenge...
September 2, 2017: European Biophysics Journal: EBJ
https://www.readbyqxmd.com/read/28864994/a-genetic-variant-in-the-placenta-derived-mhc-class-i-chain-related-gene-a-increases-the-risk-of-preterm-birth-in-a-chinese-population
#19
Junjiao Song, Jing Li, Han Liu, Yuexin Gan, Yang Sun, Min Yu, Yongjun Zhang, Fei Luo, Ying Tian, Weiye Wang, Jun Zhang, Julian Little, Haidong Cheng, Dan Chen
Preterm birth (PTB) is a predominant contributor to neonatal mortality and morbidity worldwide. However, the pathophysiology of PTB is not well-understood. We tested the hypothesis that single-nucleotide polymorphisms (SNPs) in the placenta-derived MHC class I chain-related gene A (MICA) could disrupt placental development and hence result in PTB. Nineteen selected SNPs in MICA were genotyped in a case-control study of 127 premature infants and 634 term controls in a Chinese Han population. We found that significantly increased PTB risk was associated with homozygosity for the A variant of rs2256318 (adjusted odds ratio = 6...
September 1, 2017: Human Genetics
https://www.readbyqxmd.com/read/28859167/up-to-52-administrations-of-macrocyclic-ionic-mr-contrast-agent-are-not-associated-with-intracranial-gadolinium-deposition-multifactorial-analysis-in-385-patients
#20
Ji Ye Lee, Ji Eun Park, Ho Sung Kim, Seon-Ok Kim, Joo Young Oh, Woo Hyun Shim, Seung Chai Jung, Choong Gon Choi, Sang Joon Kim
PURPOSE: To determine whether multiple repeated administrations of gadolinium-based macrocyclic ionic MR contrast agent (MICA) are associated with intracranial gadolinium deposition and identify the predisposing factors for deposition in various clinical situations. MATERIALS AND METHODS: In this institutional review board-approved retrospective study, 385 consecutive patients who underwent MICA-enhanced MR imaging were enrolled. The dentate nucleus-to-pons (DN/P) and globus pallidus-to-thalamus (GP/Th) signal intensity (SI) ratios on unenhanced T1-weighted images were recorded by 2 independent readers and averaged...
2017: PloS One
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