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https://www.readbyqxmd.com/read/28550067/the-carrot-and-the-stick-seem-to-enhance-motor-learning-in-patients-with-stroke
#1
EDITORIAL
Robert Hardwick, Pablo Celnik
No abstract text is available yet for this article.
May 26, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28549398/how-much-volume-of-local-anesthesia-and-how-long-should-you-wait-after-injection-for-an-effective-wrist-median-nerve-block
#2
Lyndsay M Lovely, Yasmin Z Chishti, Jennifer L Woodland, Donald H Lalonde
BACKGROUND: Many surgeons and emergentologists use non-ultrasound-guided wrist nerve blocks. There is little evidence to guide the ideal volume of local anesthesia or how long we should wait after injection before performing pain-free procedures. This pilot study examined time to maximal anesthesia to painful needle stick in 14 volunteer participants receiving bilateral wrist blocks of 6 versus 11 mL of local. METHODS: One surgeon performed all 14 bilateral wrist median nerve blocks in participants who remained blinded until after bandages were applied to their wrist...
May 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28545121/measurement-of-macular-structure-function-relationships-using-spectral-domain-optical-coherence-tomography-sd-oct-and-pattern-electroretinograms-perg
#3
Keunheung Park, Jinmi Kim, Jiwoong Lee
BACKGROUND: Retinal ganglion cell (RGC) death is a common cause of loss of vision during glaucoma. Pattern electroretinogram (PERG) is an objective measure of the central retinal function that correlates with macular GCL thickness. The aim of this study is to determine possible relationships between the N95 amplitude of pattern electroretinogram (PERGamp) and macular ganglion cell/inner plexiform layer thickness (GCIPLT). METHODS AND FINDINGS: This was a retrospective and comparative study including 74 glaucoma patients (44 early stage and 30 advanced stage cases) and 66 normal control subjects...
2017: PloS One
https://www.readbyqxmd.com/read/28544167/molecular-graph-paper
#4
Marcin Lindner, Michal Valášek, Marcel Mayor, Timo Frauhammer, Wulf Wulfhekel, Lukas Gerhard
We present a self-assembled template of tetraphenylmethane-based variants on a Au(111) surface which feature a periodic lateral arrangement of acetyl groups sticking out of the molecular film. Using the tip of a scanning tunneling microscope, this acetyl group can be removed in a spatially controlled way without a significant effect on the remaining molecular assembly. The chemically modified molecule can readily be distinguished from the original ones such that information can be engraved in the molecular film...
May 24, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28542359/performance-evaluation-of-bd-facspresto%C3%A2-point-of-care-cd4-analyzer-to-enumerate-cd4-counts-for-monitoring-hiv-infected-individuals-in-nigeria
#5
Olubunmi Ruth Negedu-Momoh, Feyisayo Ebenezer Jegede, Ali Yakubu, Oluseyi Balogun, Musa Abdullahi, Titilope Badru, Edward Adekola Oladele, Chinedu Agbakwuru, Hadiza Khamofu, Kwasi Torpey
BACKGROUND: Despite the upsurge in support and intervention of donor agencies in HIV care and treatment programing in Sub-Sahara African, antiretroviral (ART) programs are still confronted with access and coverage challenges which influence enrolment of new patients. This study investigated the validity of point of care BD FACSPresto™ CD4 analyzer for CD4+ cell count, overall agreement, correlation, sensitivity, and specificity in comparison to a reference standard flow cytometry method...
2017: PloS One
https://www.readbyqxmd.com/read/28541362/preparation-of-graphene-by-electrical-explosion-of-graphite-sticks
#6
Xin Gao, Chunxiao Xu, Hao Yin, Xiaoguang Wang, Qiuzhi Song, Pengwan Chen
Graphene nanosheets were produced by electrical explosion of high-purity graphite sticks in distilled water at room temperature. The as-prepared samples were characterized by various techniques to find different forms of carbon phases, including graphite nanosheets, few-layer graphene, and especially, mono-layer graphene with good crystallinity. Delicate control of energy injection is critical for graphene nanosheet formation, whereas mono-layer graphene was produced under the charging voltage of 22.5-23.5 kV...
May 25, 2017: Nanoscale
https://www.readbyqxmd.com/read/28541030/pt-nanoparticle-collisions-detected-by-electrocatalytic-amplification-and-afm-imaging-np-collision-frequency-adsorption-and-random-distribution-at-an-ume-surface
#7
Cesar A Ortiz-Ledón, Cynthia G Zoski
We demonstrate good agreement between the theoretical and experimental collision frequency of individual Pt NPs undergoing collisions at a Au UME (5 µm radius) using electrocatalytic amplification provided by 15 mM hydrazine in 5 mM PB (pH7) over 100 to 300 s. DLS measurements demonstrated that Pt NP aggregation in this solution had the least impact on NP diffusion coefficient and concentration values, which are directly proportional to collision frequency. We show that the smaller, uniform current steps are indicative of NPs of metallic radii in agreement with those determined by TEM, with corresponding larger NP diffusion coefficient and concentration, in agreement with DLS results...
May 25, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28538877/effects-of-isotretinoin-on-the-olfactory-function-in-patients-with-acne
#8
Demet Kartal, Mehmet Yaşar, Levent Kartal, Ibrahim Özcan, Murat Borlu
Background: Isotretinoin is a synthetic analog of vitamin A. Recent studies support a role for retinoic acid in the recovery of olfactory function following injury in mice. Objective: This study aimed at determining the effect of isotretinoin on olfactory function in patients who have acne and are otherwise healthy. Methods: Forty-five patients (aged 25-40 years) with acne were included in the study. All patients underwent a rhinological examination...
March 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28536196/physicochemical-code-for-quinary-protein-interactions-in-escherichia-coli
#9
Xin Mu, Seongil Choi, Lisa Lang, David Mowray, Nikolay V Dokholyan, Jens Danielsson, Mikael Oliveberg
How proteins sense and navigate the cellular interior to find their functional partners remains poorly understood. An intriguing aspect of this search is that it relies on diffusive encounters with the crowded cellular background, made up of protein surfaces that are largely nonconserved. The question is then if/how this protein search is amenable to selection and biological control. To shed light on this issue, we examined the motions of three evolutionary divergent proteins in the Escherichia coli cytoplasm by in-cell NMR...
May 23, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28535061/sitting-phase-monolayers-of-polymerizable-phospholipids-create-dimensional-molecular-scale-wetting-control-for-scalable-solution-based-patterning-of-layered-materials
#10
Shi Wah Choong, Shane R Russell, Jae Jin Bang, Justin K Patterson, Shelley A Claridge
The use of dimensionally ordered ligands on layered materials to direct local electronic structure and interactions with the environment promises to streamline integration into nanostructured electronic, optoelectronic, sensing, and nanofluidic interfaces. Substantial progress has been made in using ligands to control substrate electronic structure. Conversely, using the exposed face of the ligand layer to structure wetting and binding interactions, particularly with scalable solution- or spray-processed materials, remains a significant challenge...
May 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28534316/relationship-between-air-quality-and-outdoor-exercise-behavior-in-china-a-novel-mobile-based-study
#11
Liang Hu, Li Zhu, Yaping Xu, Jiaying Lyu, Kellie Imm, Lin Yang
PURPOSE: Based on data collected from an exercise app, the study aims to provide empirical evidence on the relationship between air quality and patterns of outdoor exercise in China. METHODS: Objective outdoor exercise data spanning 160 days were collected from 153 users of an exercise app, Tulipsport in China. Each exercise mode (running, biking, and walking, respectively) was organized into five air quality categories based on Air Quality Index (AQI): excellent, good, mild pollution, moderate pollution, and serious pollution...
May 22, 2017: International Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/28533875/-management-of-spontaneous-pneumothorax-about-138-cases
#12
Bouchra Habibi, Leila Achachi, Sohaib Hayoun, Mohammed Raoufi, Laila Herrak, Mustapha El Ftouh
Pneumothorax is a collection of air in the pleural cavity. We conducted a retrospective study of patients with spontaneous pneumothorax in the Department of Pneumology at the Ibn Sina Hospital in Rabat (2009-2011) with the aim to determine the epidemiological, clinical, radiological, therapeutic and evolutionary manifestation of spontaneous pneumothorax. The study involved 138 patients: 128 men and 10 women (17-83 years), with an average age of 44.5 +/- 17.4 years and sex ratio of 12/8. 81.2% of patients were smokers...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28533218/involvement-of-two-component-signaling-in-bacterial-motility-and-biofilm-development
#13
Birgit M Prüβ
Two-component signaling is a specialized mechanism that bacteria use to respond to changes in their environment. Non-pathogenic strains of E. coli K-12 harbor 30 histidine kinases and 32 response regulators, which form a network of regulation that integrates many other global regulators that do not follow the two-component signaling mechanism, as well as signals from central metabolism. The output of this network is a multitude of phenotypic changes in response to changes in the environment. Among these phenotypic changes, many two-component systems control motility and/or the formation of biofilm, sessile communities of bacteria that form on surfaces...
May 22, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28532998/the-challenges-of-donor-derived-risk-donor-shortage-and-waitlist-mortality-in-children-time-for-a-new-measuring-stick
#14
EDITORIAL
Brian Feingold
No abstract text is available yet for this article.
May 4, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28530193/surface-adsorption-of-poisonous-pb-ii-ions-from-water-using-chitosan-functionalised-magnetic-nanoparticles
#15
Femina Carolin Christopher, Saravanan Anbalagan, Ponnusamy Senthil Kumar, Sundar Rajan Pannerselvam, Vinoth Kumar Vaidyanathan
In this study, chitosan functionalised magnetic nano-particles (CMNP) was synthesised and utilised as an effective adsorbent for the removal of Pb(II) ions from aqueous solution. The experimental studies reveal that adsorbent material has finer adsorption capacity for the removal of heavy metal ions. Parameters affecting the adsorption of Pb(II) ions on CMNP, such as initial Pb(II) ion concentration, contact time, solution pH, adsorbent dosage and temperature were studied. The adsorption equilibrium study showed that present adsorption system followed a Freundlich isotherm model...
June 2017: IET Nanobiotechnology
https://www.readbyqxmd.com/read/28530151/microneedles-for-vaccine-delivery-challenges-and-future-perspectives
#16
Chong In Shin, Seong Dong Jeong, N Sanoj Rejinold, Yeu-Chun Kim
Vaccine delivery to the skin using conventional needles is associated with needle-stick injuries and needle-phobia, which are all major obstacles to vaccination. The development of microneedles has enabled to overcome these limitations and as a result viral, DNA and bacterial vaccines have been studied for the delivery into the skin. Research has shown the superiority of microneedle vaccination over conventional needles in terms of immunogenicity, vaccine stability and dose-sparing abilities in animals and humans...
June 2017: Therapeutic Delivery
https://www.readbyqxmd.com/read/28529253/relationship-between-blurring-and-refocus-flip-angle-in-3d-double-inversion-recovery-mri
#17
Tomoyuki Wada, Norio Hayashi, Shunichi Motegi, Hiroyuki Nagase, Kouichi Ujita, Akio Ogura, Toshihiro Ogura, Takehiro Shimada, Yoshito Tsushima
It is important to optimize imaging parameters in 3D-double inversion recovery (DIR) magnetic resonance imaging (MRI) for detecting cortical micro lesions. However, inadequate parameters markedly raise blurring in 3DDIR MRI. The purpose of this study was to evaluate the relationship between the blurring and refocus flip angle (RFA) in 3D-DIR MRI. White matter attenuated inversion recovery (WAIR) images as a test sample were obtained by 1.5T MRI with various RFA settings (30°, 40°, 60°, 100°, 140°, 180°, and variable refocus flip angle (VRFA))...
2017: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/28529172/contribution-of-muscarinic-receptors-to-in-vitro-and-in-vivo-effects-of-ruscus-extract
#18
Isabelle Rauly-Lestienne, Peter Heusler, Didier Cussac, Frédérique Lantoine-Adam, Fatima Zely Garcia de Almeida Cyrino, Eliete Bouskela
The objectives of this study were to evaluate, in vitro and in vivo, the contribution of muscarinic receptors to the effects of Ruscus extract. Ruscus extract was tested in competition binding experiments at recombinant human muscarinic receptors, heterologous expressed in Chinese Hamster Ovary (CHO) cells and in cellular assays measuring Ca(2+) liberation and activator protein-1 (AP-1) reporter gene activation. The impact of muscarinic blockade on prolonged treatment outcome was evaluated using the hamster cheek pouch (HCP) microcirculation examining macromolecular permeability increase induced by histamine or ischemia/reperfusion (I/R), mean arteriolar and venular diameters, functional capillary density and I/R-induced leukocyte rolling and sticking...
May 18, 2017: Microvascular Research
https://www.readbyqxmd.com/read/28527872/response-to-should-we-use-the-tetanus-quick-stick-in-the-emergency-department
#19
Patrick Olivieri, Taylor Miller, Elizabeth Singer
No abstract text is available yet for this article.
April 21, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28526471/-comparison-of-different-stylets-used-for-intubation-with-the-c-mac-d-blade-%C3%A2-videolaryngoscope-a-randomized-controlled-study
#20
Dilek Ömür, Başak Bayram, Şule Özbilgin, Volkan Hancı, Bahar Kuvaki
OBJECTIVE: The angle of the C-MAC D-Blade(®) videolaryngoscope, which is used for difficult airway interventions, is not compatible with routinely used endotracheal tubes. METHODS: A prospective randomized crossover study was performed comparing five intubation methods for use with standardized airways, including using different stylets or no stylet: Group HS, hockey-stick stylet; Group DS, D-blade type stylet; Group CS, CoPilot(®) videolaryngoscope rigid stylet(®); Group GEB, gum elastic bougie; and Group NS, no stylet...
May 17, 2017: Revista Brasileira de Anestesiologia
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