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https://www.readbyqxmd.com/read/28443878/influence-of-high-energy-electron-irradiation-on-the-network-structure-of-gelatin-hydrogels-as-investigated-by-small-angle-x-ray-scattering-saxs
#1
Emilia I Wisotzki, Paolo Tempesti, Emiliano Fratini, Stefan G Mayr
The impact of high energy crosslinking on the network structure of gelatin hydrogels was investigated in comparison to physically entangled gels by small-angle X-ray scattering (SAXS). Physically entangled gelatin of increasing concentration exhibited a nearly constant correlation length of several nanometers. These gels had scattering behavior close to that of polymer coils swollen in a good solvent, as evidenced by the Porod exponent of 1.8. The mass fractal dimension decreased towards 1, indicating increased formation of semiflexible gelatin triple helices and rod-like structures as a function of the gelatin concentration...
April 26, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28441676/transitioning-from-volume-to-value-one-academic-medical-center-s-approach-to-improving-population-health
#2
Stephanie A C Halvorson, Mary E Tanski, Thomas R Yackel
PROBLEM: The U.S. health care system is undergoing a major transformation. Clinical delivery systems are now being paid according to the value of the care they provide, in accordance with the Triple Aim, which incorporates improving the quality and cost of care and the patient experience. Increasingly, financial risk is being transferred from insurers to clinical delivery systems that become responsible for both episode-based clinical care and the longitudinal care of patients. Thus, these delivery systems need to develop strategies to manage the health of populations...
May 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28433163/fabrication-of-schizophyllan-hydrogel-via-orthogonal-thiol-ene-photopolymerization
#3
Sora Lee, Hyunhyuk Tae, Chang Seok Ki
Schizophyllan (SPG) is a water soluble β-glucan, which is obtained from Schizophyllum commune. SPG has been widely explored with its unique properties such as triple helical structure, immune-modulation, and anti-tumoral activity. In this study, we tried to fabricate SPG hydrogel via thiol-ene photopolymerization. SPG-norbornene and SPG-thiol were synthesized from ultrasonicated SPG. Two types of SPG hydrogels (SPG and PEG/SPG hybrid) were formed via thiol-ene photo-click reaction. By controlling the SPG content and stoichiometric balance of norbornene and thiol groups, swelling ratio and shear elastic modulus of SPG hydrogel could be controlled in the range of 20-60 and 0...
July 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28429390/microporous-polyamide-membranes-for-molecular-sieving-of-nitrogen-from-volatile-organic-compounds
#4
Haoli Zhou, Fei Tao, Quan Liu, Chunxin Zong, Wenchao Yang, Xingzhong Cao, Wanqin Jin, Nanping Xu
Microporous polymer membranes continue to receive tremendous attention for energy-efficient gas separation processes owing to their high separation performances. A new network microporous polyamide membrane with good molecular-sieving performance for the separation of N2 from a volatile organic compound (VOC) mixture is described. Triple-substituted triptycene was used as the main monomer to form a fisherman's net-shaped polymer, which readily forms a composite membrane by solution casting. This membrane exhibited outstanding separation performance and good stability for the molecular-sieving separation of N2 over VOCs such as cyclohexane...
April 21, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28427468/learning-from-biomedical-linked-data-to-suggest-valid-pharmacogenes
#5
Kevin Dalleau, Yassine Marzougui, Sébastien Da Silva, Patrice Ringot, Ndeye Coumba Ndiaye, Adrien Coulet
BACKGROUND: A standard task in pharmacogenomics research is identifying genes that may be involved in drug response variability, i.e., pharmacogenes. Because genomic experiments tended to generate many false positives, computational approaches based on the use of background knowledge have been proposed. Until now, only molecular networks or the biomedical literature were used, whereas many other resources are available. METHOD: We propose here to consume a diverse and larger set of resources using linked data related either to genes, drugs or diseases...
April 20, 2017: Journal of Biomedical Semantics
https://www.readbyqxmd.com/read/28425141/efficacy-of-helicobacter-pylori-eradication-therapies-in-korea-a-systematic-review-and-network-meta-analysis
#6
REVIEW
Yoon Suk Jung, Chan Hyuk Park, Jung Ho Park, Eunwoo Nam, Hang Lak Lee
BACKGROUND: The efficacy of Helicobacter pylori eradication regimens may depend on the country where the studies were performed because of the difference in antibiotic resistance. We aimed to analyze the efficacy of H. pylori eradication regimens in Korea where clarithromycin resistance rate is high. METHODS: We searched for all relevant randomized controlled trials published until November 2016 that investigated the efficacy of H. pylori eradication therapies in Korea...
April 19, 2017: Helicobacter
https://www.readbyqxmd.com/read/28424064/effectiveness-of-triple-therapy-with-direct-acting-antivirals-for-hepatitis-c-genotype-1-infection-application-of-propensity-score-matching-in-a-national-hcv-treatment-registry
#7
Emma Gray, David J Pasta, Suzanne Norris, Aisling O'Leary
BACKGROUND: Observational studies are used to measure the effectiveness of an intervention in non-experimental, real world scenarios at the population level and are recognised as an important component of the evidence pyramid. Such data can be accrued through prospective cohort studies and a patient registry is a proven method for this type of study. The national hepatitis C (HCV) registry was established in Ireland in 2012 with the aim of monitoring the clinical and economic outcomes from new, high cost regimens for the treatment of HCV infection...
April 19, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28423538/gene-regulatory-pattern-analysis-reveals-essential-role-of-core-transcriptional-factors-activation-in-triple-negative-breast-cancer
#8
Li Min, Cheng Zhang, Like Qu, Jialiang Huang, Lan Jiang, Jiafei Liu, Luca Pinello, Guo-Cheng Yuan, Chengchao Shou
BACKGROUND: Triple-negative breast cancer (TNBC) is an aggressive breast cancer subtype. Genome-scale molecular characteristics and regulatory mechanisms that distinguish TNBC from other subtypes remain incompletely characterized. RESULTS: By combining gene expression analysis and PANDA network, we defined three different TF regulatory patterns. A core TNBC-Specific TF Activation Driven Pattern (TNBCac) was specifically identified in TNBC by computational analysis...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28416876/comparison-of-rheological-behaviors-and-nanostructure-of-bighead-carp-scales-gelatin-modified-by-different-modification-methods
#9
Tao Huang, Zong-Cai Tu, Hui Wang, Wei Liu, Lu Zhang, Yan Zhang, Xin-Chen ShangGuan
In this study, microbial transglutaminase (MTGase) and pectin were compared to modify bighead carp (Hypophthalmichthys nobilis) scale gelatin. The functional properties of modified fish scales gelatin (FSG) were largely improved, including melting temperature and rheological behavior. While, modification methods decreased the triple-helix content and destroyed the single left-hand helix chain of modified FSG as investigated by X-ray diffraction. MTGase could induce the denser and finer gels network, but had none significant effect on nanostructural properties of fish gelatin...
April 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28406618/microwave-mediated-synthesis-of-bulky-lanthanide-porphyrin-phthalocyanine-triple-deckers-electrochemical-and-magnetic-properties
#10
Hong-Guang Jin, Xiaoqin Jiang, Irina A Kühne, Sylvain Clair, Valérie Monnier, Christophe Chendo, Ghenadie Novitchi, Annie K Powell, Karl M Kadish, Teodor Silviu Balaban
Five heteroleptic lanthanide porphyrin-bis-phthalocyanine triple-decker complexes with bulky peripheral groups were prepared via microwave-assisted synthesis and characterized in terms of their spectroscopic, electrochemical, and magnetic properties. These compounds, which were easily obtained under our preparative conditions, would normally not be accessible in large quantities using conventional synthetic methods, as a result of the low yield resulting from steric congestion of bulky groups on the periphery of the phthalocyanine and porphyrin ligands...
April 13, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28401451/col1a2-is-a-novel-biomarker-to-improve-clinical-prediction-in-human-gastric-cancer-integrating-bioinformatics-and-meta-analysis
#11
Li Rong, Wei Huang, Shangkun Tian, Xiangbo Chi, Pan Zhao, Fengfeng Liu
Gastric cancer is the third most common cause of cancer-related death in worldwide. It is crucial to target the key genes controlling pathogenesis in the early stage of gastric cancer. This study describes an integrated bioinformatics to identify molecular biomarkers for gastric cancer in patients' cancer tissues. We reports differently expression genes in large gastric cancer cohorts from Gene Expression Ominus (GEO). Our findings revealed that 433 genes were significantly different expressed in human gastric cancer...
April 11, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28397886/2d-supramolecular-networks-of-dibenzonitrilediacetylene-on-ag-111-stabilized-by-intermolecular-hydrogen-bonding
#12
G Galeotti, M Ebrahimi, J Lipton-Duffin, J M MacLeod, S Rondeau-Gagné, J-F Morin, F Rosei
The two-dimensional (2D) surface-directed self-assembly of dibenzonitrile diacetylene (DBDA) on Ag(111) under ultrahigh vacuum (UHV) conditions was investigated by combining scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS) and theoretical simulations based on density functional theory (DFT) calculations. The molecule consists of two benzonitrile groups (-C6H4-C[triple bond, length as m-dash]N) on each side of a diacetylene (-C[triple bond, length as m-dash]C-C[triple bond, length as m-dash]C-) backbone...
April 19, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28392767/early-onset-network-hyperexcitability-in-presymptomatic-alzheimer-s-disease-transgenic-mice-is-suppressed-by-passive-immunization-with-anti-human-app-a%C3%AE-antibody-and-by-mglur5-blockade
#13
Syed F Kazim, Shih-Chieh Chuang, Wangfa Zhao, Robert K S Wong, Riccardo Bianchi, Khalid Iqbal
Cortical and hippocampal network hyperexcitability appears to be an early event in Alzheimer's disease (AD) pathogenesis, and may contribute to memory impairment. It remains unclear if network hyperexcitability precedes memory impairment in mouse models of AD and what are the underlying cellular mechanisms. We thus evaluated seizure susceptibility and hippocampal network hyperexcitability at ~3 weeks of age [prior to amyloid beta (Aβ) plaque deposition, neurofibrillary pathology, and cognitive impairment] in a triple transgenic mouse model of familial AD (3xTg-AD mouse) that harbors mutated human Aβ precursor protein (APP), tau and presenilin 1 (PS1) genes...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28387539/expression-of-phosphorylated-hippo-pathway-kinases-mst1-2-and-lats1-2-in-her2-positive-and-triple-negative-breast-cancer-patients-treated-with-neoadjuvant-therapy
#14
Cristiana Ercolani, Anna Di Benedetto, Irene Terrenato, Laura Pizzuti, Luigi Di Lauro, Domenico Sergi, Francesca Sperati, Simonetta Buglioni, Maria Teresa Ramieri, Lucia Mentuccia, Teresa Gamucci, Letizia Perracchio, Edoardo Pescarmona, Marcella Mottolese, Maddalena Barba, Patrizia Vici, Ruggero De Maria, Marcello Maugeri-Saccà
The Hippo kinases MST1/2 and LATS1/2 inhibit the oncoproteins TAZ/YAP and regulate T cell function. Hippo kinases also cooperate with the ATR-Chk1 and ATM-Chk2 pathways, central orchestrators of the DNA damage response (DDR). We hypothesized that MST1/2 and LATS1/2 localization differently impacts the efficacy of neoadjuvant therapy (NAT) in breast cancer, being protective when expressed in the cytoplasm of tumor cells and in tumor-infiltrating lymphocytes, whereas representing molecular determinants of chemoresistance when present in the nucleus as a consequence of their cooperation with the DDR...
April 7, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/28382095/prognostic-influence-of-bcl2-on-molecular-subtypes-of-breast-cancer
#15
Ki-Tae Hwang, Wonshik Han, Jongjin Kim, Hyeong-Gon Moon, Sohee Oh, Yun Seon Song, Young A Kim, Mee Soo Chang, Dong-Young Noh
PURPOSE: We aimed to reveal the prognostic influence of B-cell CLL/lymphoma 2 (BCL2) on molecular subtypes of breast cancer. METHODS: We analyzed 9,468 patients with primary breast cancer. We classified molecular subtypes according to the National Comprehensive Cancer Network (NCCN) and St. Gallen guidelines, mainly on the basis of the expression of hormonal receptor (HR), human epidermal growth factor receptor 2 (HER2), and Ki-67. RESULTS: Regarding NCCN classification, BCL2 was a strong favorable prognostic factor in the HR(+)/HER2(-) subtype (p<0...
March 2017: Journal of Breast Cancer
https://www.readbyqxmd.com/read/28376213/neurokinin-1-receptor-antagonist-based-triple-regimens-in-preventing-chemotherapy-induced-nausea-and-vomiting-a-network-meta-analysis
#16
Yaxiong Zhang, Yunpeng Yang, Zhonghan Zhang, Wenfeng Fang, Shiyang Kang, Youli Luo, Jin Sheng, Jianhua Zhan, Shaodong Hong, Yan Huang, Ningning Zhou, Hongyun Zhao, Li Zhang
Background: Neurokinin-1 receptor antagonists (NK-1RAs) are widely used for chemotherapy-induced nausea and vomiting (CINV) control in patients with highly emetogenic chemotherapy (HEC) and/or moderately emetogenic chemotherapy (MEC). Whether the efficacy and toxicity of antiemesis are different among various NK-1RA-based triple regimens is unknown. Methods: Data of complete responses (CRs) in the acute, delayed, and overall phases and treatment-related adverse events (TRAEs) were extracted from electronic databases...
February 1, 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28365993/simulative-and-experimental-characterization-of-a-ph-dependent-clamp-like-dna-triple-helix-nanoswitch
#17
Federico Iacovelli, Andrea Idili, Alessandro Benincasa, Davide Mariottini, Alessio Ottaviani, Mattia Falconi, Francesco Ricci, Alessandro Desideri
Here we couple experimental and simulative techniques to characterize the structural/dynamical behavior of a pH-triggered switching mechanism based on the formation of a parallel DNA triple helix. Fluorescent data demonstrate the ability of this structure to reversibly switch between two states upon pH changes. Two accelerated, half microsecond, MD simulations of the system having protonated or unprotonated cytosines, mimicking the pH 5.0 and 8.0 conditions, highlight the importance of the Hoogsteen interactions in stabilizing the system, finely depicting the time-dependent disruption of the hydrogen bond network...
April 7, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28349443/cost-effectiveness-of-liraglutide-versus-dapagliflozin-for-the-treatment-of-patients-with-type%C3%A2-2-diabetes-mellitus-in-the-uk
#18
Gabriela Vega-Hernandez, Radek Wojcik, Max Schlueter
INTRODUCTION: To date there is a lack of economic analysis comparing glucagon-like peptide-1 receptor agonists (GLP-1RAs) to sodium-glucose co-transporter 2 inhibitors (SGLT-2i) for the treatment of type 2 diabetes mellitus (T2DM). Liraglutide and dapagliflozin are the most commonly prescribed GLP-1RA and SGLT-2i in the UK. This analysis investigated the cost-effectiveness of liraglutide 1.2 and 1.8 mg/day compared to dapagliflozin 10 mg/day for the treatment of T2DM in the UK in patients on dual and triple antidiabetic therapy...
March 27, 2017: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
https://www.readbyqxmd.com/read/28327711/a-global-coupled-cluster-potential-energy-surface-for-hcl-oh-%C3%A2-cl-h2o
#19
Junxiang Zuo, Bin Zhao, Hua Guo, Daiqian Xie
A new and more accurate full-dimensional global potential energy surface (PES) for the ground electronic state of the ClH2O system is developed by fitting 15 777 points obtained using an explicitly correlated unrestricted coupled-cluster method with single, double, and perturbative triple excitations (UCCSD(T)-F12b). The fitting is carried out using the permutation invariant polynomial-neural network (PIP-NN) method and has an error of 6.9 meV. The new PES has a slightly lower barrier for the atmospherically important HCl + OH → Cl + H2O reaction than the previous PES based on multi-reference configuration interaction (MRCI) calculations...
April 12, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28320608/antithrombotic-agents-for-secondary-prevention-after-acute-coronary-syndromes-a-systematic-review-and-network-meta-analysis
#20
Alexander C Fanaroff, Vic Hasselblad, Matthew T Roe, Deepak L Bhatt, Stefan K James, Ph Gabriel Steg, C Michael Gibson, E Magnus Ohman
BACKGROUND: Nine oral antithrombotic medications currently available in the United States and Europe have been studied in clinical trials for secondary prevention of cardiac events following acute coronary syndrome (ACS). Few combinations of these medications have been directly compared, and studies have used multiple different comparator regimens. METHODS: We performed a systematic review and network meta-analysis of randomized controlled trials evaluating one or more available oral antithrombotic therapies in patients with ACS or prior myocardial infarction (MI)...
March 14, 2017: International Journal of Cardiology
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