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https://www.readbyqxmd.com/read/29166708/-effects-of-astragalus-polysaccharide-on-cardiac-dysfunction-in-rabbits-with-severe-scald-injury
#1
L Zhong, J H Zhan, J H Luo, X Cheng
Objective: To investigate the effects of astragalus polysaccharide (AP) on cardiac dysfunction in rabbits with severe scald injury. Methods: Sixty-four New Zealand white rabbits were divided into pure scald group and AP group according to the random number table, with 32 rabbits in each group. Rabbits in the two groups were all inflicted with 30% total body surface area full-thickness scald on the back. Immediately after injury, rabbits in two groups were intraperitoneally injected with lactated Ringer's solution once for antishock...
November 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/29166656/fragmentation-modes-and-the-evolution-of-life-cycles
#2
Yuriy Pichugin, Jorge Peña, Paul B Rainey, Arne Traulsen
Reproduction is a defining feature of living systems. To reproduce, aggregates of biological units (e.g., multicellular organisms or colonial bacteria) must fragment into smaller parts. Fragmentation modes in nature range from binary fission in bacteria to collective-level fragmentation and the production of unicellular propagules in multicellular organisms. Despite this apparent ubiquity, the adaptive significance of fragmentation modes has received little attention. Here, we develop a model in which groups arise from the division of single cells that do not separate but stay together until the moment of group fragmentation...
November 22, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/29166617/spatiotemporal-proteomic-profiling-of-huntington-s-disease-inclusions-reveals-widespread-loss-of-protein-function
#3
Fabian Hosp, Sara Gutiérrez-Ángel, Martin H Schaefer, Jürgen Cox, Felix Meissner, Mark S Hipp, F-Ulrich Hartl, Rüdiger Klein, Irina Dudanova, Matthias Mann
Aggregation of polyglutamine-expanded huntingtin exon 1 (HttEx1) in Huntington's disease (HD) proceeds from soluble oligomers to late-stage inclusions. The nature of the aggregates and how they lead to neuronal dysfunction is not well understood. We employed mass spectrometry (MS)-based quantitative proteomics to dissect spatiotemporal mechanisms of neurodegeneration using the R6/2 mouse model of HD. Extensive remodeling of the soluble brain proteome correlated with insoluble aggregate formation during disease progression...
November 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/29166571/protective-cerebrovascular-effects-of-hydroxysafflor-yellow-a-hsya-on-ischemic-stroke
#4
Yang Sun, Dong-Ping Xu, Zhen Qin, Peng-Yuan Wang, Bo-Han Hu, Jian-Guang Yu, Yong Zhao, Ben Cai, Yong-Ling Chen, Min Lu, Jian-Guo Liu, Xia Liu
The purpose of the present work was designed to explore protective cerebrovascular effects of hydroxysafflor yellow A (HSYA), and provide preclinical efficacy and mechanism data for its possible application in patients with cerebral ischemia. The protective effect of HSYA on ischemic stroke was evaluated by infarct sizes and neurological scores in Sprague-Dawley (SD) rats with middle cerebral artery occlusion (MCAO). Cerebrovascular permeability was detected by Evans blue dye leakage in MCAO rats. Cerebral blood flow, as well as blood pressure and heart rate were monitored using flow probes in Beagle dogs...
November 19, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29166557/impact-of-crosslinker-valency-on-gold-nanoparticle-aggregate-formation-and-cellular-uptake
#5
Alice Liu, Jacob M Berlin
Synthesis of spherical, biocompatible nanoparticle aggregates using a small molecular crosslinker is a simple and flexible approach for the controlled assembly of gold nanoparticles. This strategy can be extended to a variety of crosslinkers, making it possible to the test the effect of crosslinker properties on aggregate formation and physicochemical properties. Here we synthesized aggregates using a series of structurally homologous crosslinkers with differing valencies. These aggregates have the same size, morphology, surface charge, surface coating, and stability in salt, media, and low pH conditions, but they differ in their stability to cyanide etching and uptake by cells...
November 22, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29166556/katalytische-drei-komponenten-maschinen-steuerung-der-katalytischen-aktivit%C3%A3-t-mittels-maschinengeschwindigkeit
#6
Michael Schmittel, Indrajit Paul, Abir Goswami, Nikita Mittal
Drei supramolekulare Gleitsysteme DS1-DS3 wurden als Zwei-Komponenten-Aggregate aus den Gleitern S1-S3 und der Plattform D mit ihren drei Zinkporphyrin-(ZnPor) Bindungsstellen erzeugt. Die Anbindung des zweifüßigen Gleiters an die Plattform variiert mit der Donorqualität und sterischen Hinderung an den Pyridin/Pyrimidin (pyr)-Gleitfüßen. Entsprechend bewegen sich die Gleiter mit unterschiedlichen Geschwindigkeiten über die drei Zinkporphyrine der Plattform: bei Raumtemperatur mit 32.2, 220 und 440 kHz...
November 22, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29166436/factors-associated-with-self-reported-discrimination-against-men-who-have-sex-with-men-in-brazil
#7
Laio Magno, Inês Dourado, Luís Augusto V da Silva, Sandra Brignol, Ana Maria de Brito, Mark Drew Crosland Guimarães, Adele Benzaken, Adriana de A Pinho, Carl Kendall, Ligia Regina Franco Sansigolo Kerr
OBJECTIVE: To estimate self-reported discrimination due to sexual orientation among men who have sex with men (MSM) in Brazil and to analyze associated factors. METHODS: A cross-sectional study of 3,859 MSM recruited in 2008-2009 with respondent driven sampling. Data collection conducted in health centers in 10 Brazilian cities. A face-to-face questionnaire was used and rapid HIV and syphilis tests conducted. Aggregated data were weighted and adjusted odds ratio estimated to measure the association between selected factors and self-reported discrimination due to sexual orientation...
2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/29166408/estimating-the-impact-of-tuberculosis-anatomical-classification-on-treatment-outcomes-a-patient-and-surveillance-perspective-analysis
#8
Otavio T Ranzani, Laura C Rodrigues, Eliseu A Waldman, Carlos R R Carvalho
INTRODUCTION: Tuberculosis anatomical classification is inconsistent in the literature, which limits current tuberculosis knowledge and control. We aimed to evaluate whether tuberculosis classification impacts on treatment outcomes at patient and aggregate level. METHODS: We analyzed adults from São Paulo State, Brazil with newly diagnosed tuberculosis from 2010-2013. We used an extended clinical classification of tuberculosis, categorizing cases as pulmonary, pulmonary and extrapulmonary, extrapulmonary and miliary/disseminated...
2017: PloS One
https://www.readbyqxmd.com/read/29166373/pilot-study-of-novel-lab-methodology-and-testing-of-platelet-function-in-adolescent-women-with-heavy-menstrual-bleeding
#9
Anne D Rocheleau, Ayesha Khader, Anh T P Ngo, Colin Boehnlein, Cara McDavitt, Susan Lattimore, Michael Recht, Owen J T McCarty, Kristina M Haley
INTRODUCTION: Approximately 40% of adolescent women experience heavy menstrual bleeding (HMB), and 10-62% of them have an underlying bleeding disorder (BD). Diagnosing BD remains challenging due to limitations of available clinical platelet function assays. AIM: To characterize platelet function in a population of adolescent women with HMB using small-volume whole blood assays. METHODS: Anticoagulated whole blood was used to assess platelet GPIIbIIIa activation, α-granule secretion, and aggregation in response to multiple agonists...
November 22, 2017: Pediatric Research
https://www.readbyqxmd.com/read/29166117/adsorption-and-conformations-of-lysozyme-and-%C3%AE-lactalbumin-at-a-water-octane-interface
#10
David L Cheung
As proteins contain both hydrophobic and hydrophilic amino acids, they will readily adsorb onto interfaces between water and hydrophobic fluids such as oil. This adsorption normally causes changes in the protein structure, which can result in loss of protein function and irreversible adsorption, leading to the formation of protein interfacial films. While this can be advantageous in some applications (e.g., food technology), in most cases it limits our ability to exploit protein functionality at interfaces...
November 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29166040/analytic-derivative-couplings-and-first-principles-exciton-phonon-coupling-constants-for-an-ab-initio-frenkel-davydov-exciton-model-theory-implementation-and-application-to-compute-triplet-exciton-mobility-parameters-for-crystalline-tetracene
#11
Adrian F Morrison, John M Herbert
Recently, we introduced an ab initio version of the Frenkel-Davydov exciton model for computing excited-state properties of molecular crystals and aggregates. Within this model, supersystem excited states are approximated as linear combinations of excitations localized on molecular sites, and the electronic Hamiltonian is constructed and diagonalized in a direct-product basis of non-orthogonal configuration state functions computed for isolated fragments. Here, we derive and implement analytic derivative couplings for this model, including nuclear derivatives of the natural transition orbital and symmetric orthogonalization transformations that are part of the approximation...
June 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29165989/bispentafluorophenyl-containing-additive-enhancing-efficiency-and-morphological-stability-of-polymer-solar-cells-via-hand-grabbing-like-supramolecular-pentafluorophenyl-fullerene-interactions
#12
Kai-En Hung, Che-En Tsai, Shao-Ling Chang, Yu-Ying Lai, U-Ser Jeng, Fong-Yi Cao, Chain-Shu Hsu, Chun-Jen Su, Yen-Ju Cheng
A new class of additive materials bis(pentafluorophenyl) diesters (BFEs) where the two pentafluorophenyl (C6F5) moieties are attached at the both ends of a linear aliphatic chain with tunable tether lengths (BF5, BF7, and BF13) were designed and synthesized. In the presence of the BF7 to restrict the migration of fullerene by hand-grabbing-like supramolecular interactions induced between the C6F5 groups and the surface of fullerene, the P3HT:PC61BM:BF7 device showed stable device characteristics after thermal heating at 150 oC for 25 h...
November 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29165981/layered-double-hydroxide-and-polypeptide-thermogel-nanocomposite-system-for-chondrogenic-differentiation-of-stem-cells
#13
Seon Sook Lee, Goeun Choi, Hyun Jung Lee, Yelin Kim, Jin-Ho Choy, Byeongmoon Jeong
Stem cell therapy for damaged cartilages suffers from the low rates of retention, survival, and differentiation into chondrocytes at the target site. To solve these problems, here we propose a two dimensional/three dimensional (2D/3D) nanocomposite system. As a new two dimensional (2D) material, hexagonal layered double hydroxides (LDHs) with a uniform lateral length of 2-3 μm were prepared by a hydrothermal process. And then, tonsil-derived mesenchymal stem cells (TMSCs), RGD-coated LDHs, and kartogenin (KGN) were incorporated into the gel through the thermal energy-driven gelation of the system...
November 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29165857/isolation-of-phage-display-library-derived-scfv-antibody-specific-to-listeria-monocytogenes-by-a-novel-immobilized-method
#14
Nguyen Xuan-Hung, Thu-Le Trinh, Huong Thi-Bich Vu, Huan Quang Le, Anh To Kim
AIMS: To select Listeria monocytogenes specific scFv antibodies from a phage display library by a novel simple and cost-effective immobilization method. METHODS AND RESULTS: Light Expanded Clay Aggregate (LECA) was used as biomass support matrix for biopanning of a phage display library to select Listeria monocytogenes specific scFv antibody. Four rounds of positive selection against LECA-immobilized L. monocytogenes and an additional subtractive panning against L...
November 22, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29165809/medical-industry-at-tumor-board-three-years-analysis-of-the-open-payments-database-and-comparison-of-oncologic-specialties
#15
Amanjit S Baadh, Mikin Patel, Ketan Patel, Osman Ahmed
BACKGROUND AND OBJECTIVES: To analyze and contrast medical industry payments across U.S. oncologic providers, including hematology-oncology (HO), surgical oncology (SO), interventional radiology (IR), and radiation oncology (RO). METHODS: Open-payment-data for each provider including provider specialty, state of practice, industry payor, reason for payment, and amount was compiled for each transaction between 2013 and 2015. Total, mean, and median payment amounts per-provider were calculated for each specialty...
November 22, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29165737/management-of-hemostasis-for-pediatric-patients-on-ventricular-assist-devices
#16
Iki Adachi, Vadim Kostousov, Lisa Hensch, Martin A Chacon-Portillo, Jun Teruya
Ventricular-assist devices (VADs) have seen increased utilization in the pediatric population. Formerly, this therapeutic modality was limited to only the pulsatile VAD, EXCOR (Berlin Heart GmbH). However, the continuous flow VAD devices, HeartMate II (Abbott Inc.) and HeartWare (Medtronic Inc.), are now increasingly used in this population. Postoperatively, VAD patients are acutely anticoagulated using unfractionated heparin, often beginning 24 to 48 hours after VAD placement. Once the patient is stabilized and ready to transition to a lower acuity or outpatient setting, low-molecular-weight heparin or warfarin therapy may be instituted...
November 17, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/29165669/clinvar-improving-access-to-variant-interpretations-and-supporting-evidence
#17
Melissa J Landrum, Jennifer M Lee, Mark Benson, Garth R Brown, Chen Chao, Shanmuga Chitipiralla, Baoshan Gu, Jennifer Hart, Douglas Hoffman, Wonhee Jang, Karen Karapetyan, Kenneth Katz, Chunlei Liu, Zenith Maddipatla, Adriana Malheiro, Kurt McDaniel, Michael Ovetsky, George Riley, George Zhou, J Bradley Holmes, Brandi L Kattman, Donna R Maglott
ClinVar (https://www.ncbi.nlm.nih.gov/clinvar/) is a freely available, public archive of human genetic variants and interpretations of their significance to disease, maintained at the National Institutes of Health. Interpretations of the clinical significance of variants are submitted by clinical testing laboratories, research laboratories, expert panels and other groups. ClinVar aggregates data by variant-disease pairs, and by variant (or set of variants). Data aggregated by variant are accessible on the website, in an improved set of variant call format files and as a new comprehensive XML report...
November 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29165568/second-harmonic-generation-reveals-subtle-fibrosis-differences-in-adult-and-pediatric-nonalcoholic-fatty-liver-disease
#18
Feng Liu, Jing-Min Zhao, Hui-Ying Rao, Wei-Miao Yu, Wei Zhang, Neil D Theise, Aileen Wee, Lai Wei
Objectives: Investigate subtle fibrosis similarities and differences in adult and pediatric nonalcoholic fatty liver disease (NAFLD) using second harmonic generation (SHG). Methods: SHG/two-photon excitation fluorescence imaging quantified 100 collagen parameters and determined qFibrosis values by using the nonalcoholic steatohepatitis (NASH) Clinical Research Network (CRN) scoring system in 62 adult and 36 pediatric NAFLD liver specimens. Results: Six distinct parameters identified differences among the NASH CRN stages with high accuracy (area under the curve, 0835-0...
November 20, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29165500/uv-vis-spectrophotometry-of-quinone-flow-battery-electrolyte-for-in-situ-monitoring-and-improved-electrochemical-modeling-of-potential-and-quinhydrone-formation
#19
Liuchuan Tong, Qing Chen, Andrew A Wong, Rafael Gómez-Bombarelli, Alán Aspuru-Guzik, Roy G Gordon, Michael J Aziz
Quinone-based aqueous flow batteries provide a potential opportunity for large-scale, low-cost energy storage due to their composition from earth abundant elements, high aqueous solubility, reversible redox kinetics and their chemical tunability such as reduction potential. In an operating flow battery utilizing 9,10-anthraquinone-2,7-disulfonic acid, the aggregation of an oxidized quinone and a reduced hydroquinone to form a quinhydrone dimer causes significant variations from ideal solution behavior and of optical absorption from the Beer-Lambert law...
November 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29165496/fluorescence-quenching-based-signal-amplification-on-immunochromatography-test-strips-for-dual-mode-sensing-of-two-biomarkers-of-breast-cancer
#20
Bo Zhang, Wenjuan Ma, Fuxin Li, Weichen Gao, Qian Zhao, Weipan Peng, Jiafang Piao, Xiaoli Wu, Hanjie Wang, Xiaoqun Gong, Jin Chang
Recently, immunochromatography test strips (ICTS) have been fully developed for point-of-care testing (POCT). However, the intrinsic limitations including non-quantitative detection of colloidal gold ICTS and low sensitivity of fluorescence ICTS (FICTS) significantly restrict their further application in clinical diagnosis. Taking advantages of rapid colorimetric qualitative detection and fluorescence quantitation, we designed a kind of sensitive and dual-mode magnetic FICTS (mFICTS) based on PLGA@Fe3O4 super-paramagnetic nanosphere (SPMN) probes quenching multiplex fluorescer on the test line through sandwich immunoreactions...
November 22, 2017: Nanoscale
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