keyword
MENU ▼
Read by QxMD icon Read
search

Core stability

keyword
https://www.readbyqxmd.com/read/28449074/fireprot-web-server-for-automated-design-of-thermostable-proteins
#1
Milos Musil, Jan Stourac, Jaroslav Bendl, Jan Brezovsky, Zbynek Prokop, Jaroslav Zendulka, Tomas Martinek, David Bednar, Jiri Damborsky
There is a continuous interest in increasing proteins stability to enhance their usability in numerous biomedical and biotechnological applications. A number of in silico tools for the prediction of the effect of mutations on protein stability have been developed recently. However, only single-point mutations with a small effect on protein stability are typically predicted with the existing tools and have to be followed by laborious protein expression, purification, and characterization. Here, we present FireProt, a web server for the automated design of multiple-point thermostable mutant proteins that combines structural and evolutionary information in its calculation core...
April 26, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28447775/preparation-characterization-and-electrochromic-properties-of-nanocellulose-based-polyaniline-nanocomposite-films
#2
Sihang Zhang, Gang Sun, Yongfeng He, Runfang Fu, Yingchun Gu, Sheng Chen
Based on nanocellulose obtained by acidic swelling and ultrasonication, rod-like nanocellulose/polyaniline nanocomposites with a core-shell structure have been prepared via in situ polymerization. Compared to pure polyaniline, the nanocomposites show superior film forming properties and the prepared nanocomposite films demonstrate excellent electrochemical and electrochromic properties in electrolyte solution. Nanocomposite films, especially the one prepared with 40% polyaniline coated nanocomposite, exhibited faster response time (1...
April 27, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28445478/delayed-histochemical-alterations-within-the-neurovascular-unit-due-to-transient-focal-cerebral-ischemia-and-experimental-treatment-with-neurotrophic-factors
#3
Dominik Michalski, Roman Pitsch, Deepu R Pillai, Bianca Mages, Susanne Aleithe, Jens Grosche, Henrik Martens, Felix Schlachetzki, Wolfgang Härtig
Current stroke therapy is focused on recanalizing strategies, but neuroprotective co-treatments are still lacking. Modern concepts of the ischemia-affected neurovascular unit (NVU) and surrounding penumbra emphasize the complexity during the transition from initial damaging to regenerative processes. While early treatment with neurotrophic factors was shown to result in lesion size reduction and blood-brain barrier (BBB) stabilization, cellular consequences from these treatments are poorly understood. This study explored delayed cellular responses not only to ischemic stroke, but also to an early treatment with neurotrophic factors...
2017: PloS One
https://www.readbyqxmd.com/read/28445228/the-relationship-of-core-strength-and-activation-and-performance-on-three-functional-movement-screens
#4
Caleb D Johnson, Paul N Whitehead, Erin R Pletcher, Mallory S Faherty, Mita T Lovaleka, Shawn R Eagle, Karen A Keenan
Current measures of core stability utilized by clinicians and researchers suffer from several shortcomings. Three functional movement screens appear, at face-value, to be dependent on the ability to activate and control core musculature. These three screens may present a viable alternative to current measures of core stability. Thirty-nine subjects completed a deep squat, trunk stability push-up, and rotary stability screen. Scores on the three screens were summed to calculate a composite score (COMP). During the screens, muscle activity was collected to determine the length of time that the bilateral erector spinae, rectus abdominus, external oblique, and gluteus medius muscles were active...
April 18, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28443918/ph-responsiveness-of-hydrogels-formed-by-telechelic-polyampholytes
#5
Margarita A Dyakonova, George Gotzamanis, Bart-Jan Niebuur, Natalya S Vishnevetskaya, Konstantinos N Raftopoulos, Zhenyu Di, Sergey K Filippov, Constantinos Tsitsilianis, Christine M Papadakis
We investigate the influence of pH on the rheological and structural properties of hydrogels formed by hydrophobic association of the sticky ends of the triblock terpolymer poly(methyl methacrylate)-b-poly(2-(diethylamino)ethyl methacrylate-co-methacrylic acid)-b-poly(methyl methacrylate) (PMMA-b-P(DEA-co-MAA)-b-PMMA). The middle block is a weak polyampholyte having a pH dependent charge density and sign, which enables tuning of the rheological and structural properties by pH variation. Small-angle neutron scattering (SANS) studies of solutions in D2O at 0...
April 26, 2017: Soft Matter
https://www.readbyqxmd.com/read/28443828/controlled-synthesis-of-mno2-nanosheets-vertically-covered-feco2o4-nanoflakes-as-binder-free-electrode-for-high-power-and-durable-asymmetric-supercapacitor
#6
Hongyan Gao, Junjie Xiang, Yan Cao
We developed a simple and controlled method to synthesize FeCo2O4@MnO2 core-sheath nanoarchitecture (CSN) grown on the Ni foam. Ultrathin FeCo2O4 nanoflakes with an average thickness of 10 nm served as the scaffold to deposit MnO2 nanosheets. The MnO2 nanosheets were able to vertically grow on FeCo2O4 nanoflakes to form a sheath via a hydrothermal reaction. The nanocomposites' thickness can be tailored from 80 nm to 550 nm by changing the reaction times. Electrochemical measurements demonstrated that FeCo2O4@MnO2 CSN with an optimal thickness about 400 nm achieved an areal capacitance of 3...
April 26, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28442415/retro-inverso-d-peptide-modified-ha-rhb-pdna-core-shell-ternary-nanoparticles-for-the-dual-targeted-delivery-of-short-hairpin-rna-encoding-plasmids
#7
Jijin Gu, Xinyi Chen, Xiaoling Fang, Xianyi Sha
The active targeting of gene carriers is a powerful strategy for improving tumour-specific delivery and therapy. Although numerous L-peptide ligands play significant roles in the active targeting of nanomedicine, retro-inverso D-peptides have been explored as targeting ligands due to their superior stability and bioactivity in vivo. In this study, retro-inverso D-peptide (RIF7)-modified hyaluronic acid (HA)/bioreducible hyperbranched poly(amido amine) (RHB)/plasmid DNA (pDNA) ternary nanoparticles were successfully developed using the layer-by-layer method for the CD44-positive tumour-specific delivery of short hairpin RNA-encoding pDNA through the synergistic reaction of the Anxa1 (tumour vasculature) and CD44 (tumour cell-surface) receptors, which mediated the dual targeting...
April 22, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28441020/general-c-h-arylation-strategy-for-the-synthesis-of-tunable-visible-light-emitting-high-stokes-shift-benzo-a-imidazo-2-1-5-c-d-indolizine-fluorophores
#8
Éric Lévesque, William Schulz Bechara, Léa Constantineau-Forget, Guillaume Pelletier, Natalie M Rachel, Joelle N Pelletier, André B Charette
Herein we report the discovery of the benzo[a]imidazo[2,1,5-c,d]indolizine motif displaying tunable emission covering most of the visible spectrum. The polycyclic core is obtained from readily available amides via a chemoselective process involving Tf2O-mediated amide cyclodehydration followed by intramolecular C-H arylation. Additionally, these fluorescent heterocycles are easily functionalized using electrophilic reagents, enabling divergent access to varied substitution. The effects of said substitution on the compounds' photophysical properties were rationalized by DFT calculations...
April 25, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28440613/constructing-a-heterostructural-lini0-4mn1-6o4-%C3%AE-material-from-concentration-gradient-framework-to-significantly-improve-its-cycling-performance
#9
Fang Lian, Fan Zhang, Lin Yang, Leilei Ma, Yadi Li
A heterostructural LiNi0.35Mn1.65O4-δ-LiNi0.5Mn1.5O4 was achieved via constructing the concentration-gradient material with an average composition of LiNi0.4Mn1.6O4-δ. The as-obtained samples have been characterized by the cross sectional scanning electron microscopy (SEM) and energy dispersive x-ray spectrometry (EDS) that the core material LiNi0.35Mn1.65O4-δ is encapsulated completely by a concentration-gradient shell with the outmost layer of LiNi0.5Mn1.5O4. Demonstrated by high resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS) analysis with low-energy Ar neutral beam etching method, the structurally stable P4332 phase on the surface coordinates the high conductive Fd-3m phase in the bulk without any detectable interface...
April 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28440269/ruthenium-cobalt-nanoalloys-encapsulated-in-nitrogen-doped-graphene-as-active-electrocatalysts-for-producing-hydrogen-in-alkaline-media
#10
Jianwei Su, Yang Yang, Guoliang Xia, Jitang Chen, Peng Jiang, Qianwang Chen
The scalable production of hydrogen could conveniently be realized by alkaline water electrolysis. Currently, the major challenge confronting hydrogen evolution reaction (HER) is lacking inexpensive alternatives to platinum-based electrocatalysts. Here we report a high-efficient and stable electrocatalyst composed of ruthenium and cobalt bimetallic nanoalloy encapsulated in nitrogen-doped graphene layers. The catalysts display remarkable performance with low overpotentials of only 28 and 218 mV at 10 and 100 mA cm(-2), respectively, and excellent stability of 10,000 cycles...
April 25, 2017: Nature Communications
https://www.readbyqxmd.com/read/28440091/microbial-exopolysaccharide-mediated-synthesis-and-stabilization-of-metal-nanoparticles
#11
Ganesan Sathiyanarayanan, Krishnamoorthy Dineshkumar, Yung-Hun Yang
Exopolysaccharides (EPSs) are structurally and functionally valuable biopolymer secreted by different prokaryotic and eukaryotic microorganisms in response to biotic/abiotic stresses and to survive in extreme environments. Microbial EPSs are fascinating in various industrial sectors due to their excellent material properties and less toxic, highly biodegradable, and biocompatible nature. Recently, microbial EPSs have been used as a potential template for the rapid synthesis of metallic nanoparticles and EPS-mediated metal reduction processes are emerging as simple, harmless, and environmentally benign green chemistry approaches...
April 25, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28439740/synthetic-cold-inducible-promoter-enhances-recombinant-protein-accumulation-during-agrobacterium-mediated-transient-expression-in-nicotiana-excelsior-at-chilling-temperatures
#12
I M Gerasymenko, Y V Sheludko
OBJECTIVES: To exploit cold-inducible biochemical processes beneficial for foreign mRNA transcription, translation and storage, as well as protein product stability, during Agrobacterium-mediated transient expression. RESULTS: The efficiency of three different 5'-regulatory sequences to achieve transient expression of the GFP-based reporter gene under chilling conditions (6-8 °C since the 3rd day post inoculation) was compared. We studied the upstream sequences of a cold-inducible Arabidopsis thaliana cor15a gene, the core element of 35S CaMV promoter fused to the TMV omega 5'-UTR, and the synthetic promoter including the 35S core sequence and two binding sites for cold-inducible CBF transcription factors (P_DRE::35S)...
April 24, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28439460/novel-polymeric-micelles-for-insect-pest-control-encapsulation-of-essential-oil-monoterpenes-inside-a-triblock-copolymer-shell-for-head-lice-control
#13
Alejandro Lucia, Ariel Ceferino Toloza, Eduardo Guzmán, Francisco Ortega, Ramón G Rubio
BACKGROUND: Essential oil components (EOCs) are molecules with interesting application in pest control, these have been evaluated against different insect pest from more than 100 years, but their practical use is rather limited. Thus, the enhancement of their bioavailability and manageability due to their dispersion in water can open new perspective for the preparation of formulations for the control of insect pest. In this work, we studied the encapsulation of different monoterpenes in a poloxamer shell in order to prepare aqueous formulations that can be used for the development of platforms used in pest control...
2017: PeerJ
https://www.readbyqxmd.com/read/28439409/serial-deletion-reveals-structural-basis-and-stability-for-the-core-enzyme-activity-of-human-glutaminase-1-isoforms-relevance-to-excitotoxic-neurodegeneration
#14
Yuju Li, Justin Peer, Runze Zhao, Yinghua Xu, Beiqing Wu, Yi Wang, Changhai Tian, Yunlong Huang, Jialin Zheng
BACKGROUND: Glutaminase 1 is a phosphate-activated metabolic enzyme that catalyzes the first step of glutaminolysis, which converts glutamine into glutamate. Glutamate is the major neurotransmitter of excitatory synapses, executing important physiological functions in the central nervous system. There are two isoforms of glutaminase 1, KGA and GAC, both of which are generated through alternative splicing from the same gene. KGA and GAC both transcribe 1-14 exons in the N-terminal, but each has its unique C-terminal in the coding sequence...
2017: Translational Neurodegeneration
https://www.readbyqxmd.com/read/28437825/-quality-of-life-and-functional-outcome-after-microsurgical-decompression-in-lumbar-spinal-stenosis-a-register-study
#15
Kourosh Zarghooni, Frank Beyer, Joanna Papadaki, Christoph Kolja Boese, Jan Siewe, Gereon Schiffer, Peer Eysel, Jan Bredow
Introduction Because of recent increases in life expectancy, lumbar spinal stenosis (LSS) has become one of the most common degenerative changes in the spine. In patients not responding to conservative therapy, microsurgical decompression is the gold standard of operative treatment for degenerative LSS. The goal of the current study is to evaluate quality of life after microsurgical decompression for LSS, using data from the DWG Register (previously Spine Tango). Methods 36 patients were included in this single-center, prospective, observational study from January 2013 to June 2014...
April 24, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28437249/the-differential-spatiotemporal-expression-pattern-of-shelterin-genes-throughout-lifespan
#16
Kay-Dietrich Wagner, Yilin Ying, Waiian Leong, Jie Jiang, Xuefei Hu, Yi Chen, Jean-François Michiels, Yiming Lu, Eric Gilson, Nicole Wagner, Jing Ye
Shelterin forms the core complex of telomere proteins and plays critical roles in protecting telomeres against unwanted activation of the DNA damage response and in Emaintaining telomere length homeostasis. Although shelterin expression is believed to be ubiquitous for stabilization of chromosomal ends. Evidences suggest that some shelterin subunits have tissue-specific functions. However, very little is known regarding how shelterin subunit gene expression is regulated during development and aging. Using two different animal models, the mouse and zebrafish, we reveal herein that shelterin subunits exhibit distinct spatial and temporal expression patterns that do not correlate with the proliferative status of the organ systems examined...
April 17, 2017: Aging
https://www.readbyqxmd.com/read/28436454/gold-nanoparticle-polymer-nanocomposites-synthesized-by-room-temperature-atmospheric-pressure-plasma-and-their-potential-for-fuel-cell-electrocatalytic-application
#17
Ri-Chao Zhang, Dan Sun, Ruirui Zhang, Wen-Feng Lin, Manuel Macias-Montero, Jenish Patel, Sadegh Askari, Calum McDonald, Davide Mariotti, Paul Maguire
Conductive polymers have been increasingly used as fuel cell catalyst support due to their electrical conductivity, large surface areas and stability. The incorporation of metal nanoparticles into a polymer matrix can effectively increase the specific surface area of these materials and hence improve the catalytic efficiency. In this work, a nanoparticle loaded conductive polymer nanocomposite was obtained by a one-step synthesis approach based on room temperature direct current plasma-liquid interaction. Gold nanoparticles were directly synthesized from HAuCl4 precursor in poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS)...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28436079/-l-2-c2-p2-dicarbondiphosphide-stabilized-by-n-heterocyclic-carbenes-or-cyclic-diamido-carbenes
#18
Zhongshu Li, Xiaodan Chen, Diego M Andrada, Gernot Frenking, Zoltán Benkö, Yaqi Li, Jeffrey R Harmer, Cheng-Yong Su, Hansjörg Grützmacher
Carbon phosphides, Cn Pm , may have highly promising electronic, optical, and mechanical properties, but they are experimentally almost unexplored materials. Phosphaheteroallenes stabilized by N-heterocyclic carbenes undergo a one-electron reduction to yield compounds of the type (L)2 C2 P2 with diverse structures. The use of imidazolylidenes as ligands L give complexes with a central four-membered ring C2 P2 , while more electrophilic cyclic diamidocarbenes (DAC) give a compound with an acyclic π-conjugated CP-PC unit...
April 24, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28435954/electrostatically-stabilized-hybrids-of-carbon-and-maghemite-nanoparticles-electrochemical-study-and-application
#19
D Baratella, M Magro, P Jakubec, E Bonaiuto, J de Almeida Roger, E Gerotto, G Zoppellaro, J Tucek, K C Safarova, R Zbořil, A Cecconello, I Willner, S Santagata, P Sambo, F Vianello
Binary hybrids have been investigated for the past few decades due to the emerging properties of nanoparticle composites. Electrostatically stabilized core-shell nanostructures composed of surface active magnetic nanoparticles (SAMNs) and differently charged carbon nanomaterials display specific electrochemical properties. In this work, a set of binary hybrids that include a new class of magnetic nanoparticles is presented and the electrochemical features of the hybrids are reported. Gallic acid derived carbon dots (GA-CDs), PEG derived graphene dots (PEG-GDs), and quaternized carbon dots (Q-CDs) characterized by different charged groups were used for the preparation of different complexes with SAMNs...
April 24, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28435261/ph-sensitive-au-bsa-dox-fa-nanocomposites-for-combined-ct-imaging-and-targeted-drug-delivery
#20
He Huang, Da-Peng Yang, Minghuan Liu, Xiangsheng Wang, Zhiyong Zhang, Guangdong Zhou, Wei Liu, Yilin Cao, Wen Jie Zhang, Xiansong Wang
Albumin-based nanoparticles (NPs) as a drug delivery system have attracted much attention owing to their nontoxicity, non-immunogenicity, great stability and ability to bind to many therapeutic drugs. Herein, bovine serum albumin (BSA) was utilized as a template to prepare Au-BSA core/shell NPs. The outer layer BSA was subsequently conjugated with cis-aconityl doxorubicin (DOX) and folic acid (FA) to create Au-BSA-DOX-FA nanocomposites. A list of characterizations was undertaken to identify the successful conjugation of drug molecules and targeted agents...
2017: International Journal of Nanomedicine
keyword
keyword
40806
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"