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https://www.readbyqxmd.com/read/28109157/concerted-regulation-of-iswi-by-an-autoinhibitory-domain-and-the-h4-n-terminal-tail
#1
Johanna Ludwigsen, Sabrina Pfennig, Ashish K Singh, Christina Schindler, Nadine Harrer, Ignasi Forné, Martin Zacharias, Felix Mueller-Planitz
ISWI-family nucleosome remodeling enzymes need the histone H4 N-terminal tail to mobilize nucleosomes. Here we mapped the H4-tail binding pocket of ISWI. Surprisingly the binding site was adjacent to but not overlapping with the docking site of an auto-regulatory motif, AutoN, in the N-terminal region (NTR) of ISWI, indicating that AutoN does not act as a simple pseudosubstrate as suggested previously. Rather, AutoN cooperated with a hitherto uncharacterized motif, termed AcidicN, to confer H4-tail sensitivity and discriminate between DNA and nucleosomes...
January 21, 2017: ELife
https://www.readbyqxmd.com/read/28109076/microrna-409-3p-represses-glioma-cell-invasion-and-proliferation-by-targeting-high-mobility-group-nucleosome-binding-domain-5
#2
Yidong Cao, Liang Zhang, Minghao Wei, Xue Jiang, Dong Jia
Emerging evidence has suggested that aberrantly expressed microRNAs (miRNAs) are associated with glioma development andprogression. The aberrant expression of miR-409-3p has been reported in several human cancers. However, little is known about the function of miR-409-3p in gliomas. The aim of this study was to investigate the specific role and molecular mechanism of miR-409-3p in gliomas. In the present study, we found that miR-409-3p was downregulated in glioma tissue and cell lines. Overexpression of miR-409-3p inhibited glioma cell invasion and proliferation, whereas suppression of miR-409-3p promoted glioma cell invasion and proliferation...
January 20, 2017: Oncology Research
https://www.readbyqxmd.com/read/28109074/determination-of-four-nadolol-stereoisomers-in-capsules-by-high-performance-liquid-chromatography-and-circular-dichroism
#3
Grazielle Prado Alexandre, Márcio Nardelli Wandermuren, Adriano Peron, Vanessa Franco Tavares, Denis Alexandre Ramalho Padeiro, Kelly Alessandra Sakiara, María Segunda Aurora-Prado, Anil Kumar Singh, Erika Rosa Maria Kedor-Hackmann, Maria Inês Rocha Miritello Santoro
Nadolol is a blocking agent with activity in β-adrenergic receptors. The objective of this research was to develop andvalidate an HPLC and circular dichroism method for the quantification of four nadolol stereoisomers in capsules. The HPLC method was validated using a Chiralcel OD column (250 × 4,6 mm, 10 μm). The mobile phase consisted of hexane-ethanol-diethylamine-acetic acid(86 + 14 + 0.3 + 0.3, v/v/v/v), with a flow rate of 0.7 mL/min and temperature of 25 ± 1°C and UV detection carried out at 220 nm...
January 21, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28108937/glycyrrhizin-ameliorates-experimental-colitis-through-attenuating-interleukin-17-producing-t-cell-responses-via-regulating-antigen-presenting-cells
#4
Xiangyu Chen, Dai Fang, Lingyun Li, Liyong Chen, Qirui Li, Feili Gong, Min Fang
Glycyrrhizin, a component of Chinese medicine licorice root, has the ability to inhibit the functions of high-mobility group box 1 (HMGB1). While glycyrrhizin is known to have anti-inflammatory activities, the underlying mechanisms by which glycyrrhizin inhibits inflammation during the development of trinitrobenzenesulfonic acid (TNBS)-induced experimental colitis are not well understood. This study systemically examined the regulatory effects of glycyrrhizin on inflammatory response in TNBS-induced murine colitis and explored the potential mechanisms involved in this process...
January 21, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28108936/a-group-mediated-physical-activity-intervention-in-older-knee-osteoarthritis-patients-effects-on-social-cognitive-outcomes
#5
Brian C Focht, Matthew J Garver, Alexander R Lucas, Steven T Devor, Charles F Emery, Kevin V Hackshaw, Ciaran M Fairman, Jessica Bowman, W Jack Rejeski
The objective of the present study was to compare a group-mediated cognitive behavioral (GMCB) physical activity intervention with traditional exercise therapy (TRAD) upon select social cognitive outcomes in sedentary knee osteoarthritis (knee OA) patients. A total of 80 patients (mean age = 63.5 years; 84% women) were recruited using clinic and community-based strategies to a 12-month, single-blind, two-arm, randomized controlled trial. Mobility-related self-efficacy, self-regulatory self-efficacy (SRSE), and satisfaction with physical function (SPF) were assessed at baseline, 3, and 12 months...
January 20, 2017: Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/28108774/-hip-dislocation-after-revision-arthroplasty-risk-assessment-and-treatment-strategies
#6
P M Prodinger, J Schauwecker, H Mühlhofer, N Harrasser, F Pohlig, C Suren, R von Eisenhart-Rothe
With a dislocation rate of up to 35% after revision total hip arthroplasty (THA), instability is one of the major causes why this procedure fails. Independent factors for patients at risk are age, sex, and the type of revision needed. The surgical approach, implant choice, and positioning of the components are factors that the surgeon can influence to keep the dislocation rate low. Large femoral heads or double mobility (DM) cups can increase the stability of the joint. After detailed failure analysis, targeted use of different technical innovations enhances stability in revision THA and prevents further revisions...
January 20, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28108764/letr-is-a-tetr-family-transcription-factor-from-lysobacter-controlling-antifungal-antibiotic-biosynthesis
#7
Ping Wang, Hongfu Chen, Guoliang Qian, Fengquan Liu
Heat-stable antifungal factor (HSAF) is a newly identified and broad-spectrum antifungal antibiotic from Lysobacter enzymogenes, a ubiquitous environmental proteobacterium. Yet, the regulatory mechanism for HSAF biosynthesis in L. enzymogenes remains poorly understood. Here, we report the identification of a TetR-family protein Le1552 (LetR) from L. enzymogenes strain OH11 that is involved in transcriptional repression of HSAF production. Bacterial one-hybrid and gel mobility shift assays show that LetR directly binds to PHSAF (the promoter region of the HSAF biosynthesis operon)...
January 20, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28108624/inflammatory-molecule-psgl-1-deficiency-activates-macrophages-to-promote-colorectal-cancer-growth-through-nf-kappab-signaling
#8
Jiangchao Li, Zeqi Zhou, Xiaohan Zhang, Li Zheng, Dan He, Yuxiang Ye, Qian-Qian Zhang, Cui-Ling Qi, Xiao-Dong He, Chen Yu, Chun-Kui Shao, Liang Qiao, Lijing Wang
: P-selectin glycoprotein ligand 1 (SELPLG/PSGL-1) is an inflammatory molecule that is functionally related to immune cell differentiation and leukocyte mobilization. However, the role of PSGL-1 in tumor development remains unknown. Therefore, this study investigates the mechanistic role of PSGL-1 in the development of intestinal tumors in colorectal cancer (CRC). ApcMin/+ mice, are highly susceptible to spontaneous intestinal adenoma formation, and were crossbred with PSGL1-null mice to generate compound transgenic mice with a ApcMin/+;PSGL-1-/- genotype...
January 20, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28108571/dynamical-theory-of-shear-bands-in-structural-glasses
#9
Apiwat Wisitsorasak, Peter G Wolynes
The heterogeneous elastoplastic deformation of structural glasses is explored using the framework of the random first-order transition theory of the glass transition along with an extended mode-coupling theory that includes activated events. The theory involves coupling the continuum elastic theory of strain transport with mobility generation and transport as described in the theory of glass aging and rejuvenation. Fluctuations that arise from the generation and transport of mobility, fictive temperature, and stress are treated explicitly...
January 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28108526/vaps-and-acbd5-tether-peroxisomes-to-the-er-for-peroxisome-maintenance-and-lipid-homeostasis
#10
Rong Hua, Derrick Cheng, Étienne Coyaud, Spencer Freeman, Erminia Di Pietro, Yuqing Wang, Adriano Vissa, Christopher M Yip, Gregory D Fairn, Nancy Braverman, John H Brumell, William S Trimble, Brian Raught, Peter K Kim
Lipid exchange between the endoplasmic reticulum (ER) and peroxisomes is necessary for the synthesis and catabolism of lipids, the trafficking of cholesterol, and peroxisome biogenesis in mammalian cells. However, how lipids are exchanged between these two organelles is not understood. In this study, we report that the ER-resident VAMP-associated proteins A and B (VAPA and VAPB) interact with the peroxisomal membrane protein acyl-CoA binding domain containing 5 (ACBD5) and that this interaction is required to tether the two organelles together, thereby facilitating the lipid exchange between them...
January 20, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28108430/remote-monitoring-of-patients-with-heart-failure-an-overview-of-systematic-reviews
#11
REVIEW
Nazli Bashi, Mohanraj Karunanithi, Farhad Fatehi, Hang Ding, Darren Walters
BACKGROUND: Many systematic reviews exist on the use of remote patient monitoring (RPM) interventions to improve clinical outcomes and psychological well-being of patients with heart failure. However, research is broadly distributed from simple telephone-based to complex technology-based interventions. The scope and focus of such evidence also vary widely, creating challenges for clinicians who seek information on the effect of RPM interventions. OBJECTIVE: The aim of this study was to investigate the effects of RPM interventions on the health outcomes of patients with heart failure by synthesizing review-level evidence...
January 20, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28108080/prediction-of-gradient-retention-data-for-hydrophilic-interaction-liquid-chromatographic-separation-of-native-and-fluorescently-labeled-oligosaccharides
#12
Nikola Vaňková, Petr Česla
In this work, we have investigated the predictive properties of mixed-mode retention model and oligomeric mixed-mode model, taking into account the contribution of monomeric units to the retention, in hydrophilic interaction liquid chromatography. The gradient retention times of native maltooligosaccharides and their fluorescent derivatives were predicted in the oligomeric series with number of monomeric glucose units in the range from two to seven. The maltooligosaccharides were separated on a packed column with carbamoyl-bonded silica stationary phase and 15 gradient profiles with different initial and final mobile phase composition were used with the gradient times 5; 7...
January 16, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28108063/mobile-extracorporeal-membrane-oxygenation-and-the-urgency-to-reanimate-reconsidering-the-boundaries
#13
EDITORIAL
Rohit K Singal, John L Jefferies, Robert Kormos, Rakesh C Arora
No abstract text is available yet for this article.
December 13, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28108041/strain-elastography-as-a-new-method-for-assessing-pelvic-floor-biomechanics
#14
Jana Marie Kreutzkamp, Sebastian Daniel Schäfer, Susanne Amler, Felix Strube, Ludwig Kiesel, Ralf Schmitz
Strain elastography (SE) is a new technique of parametric imaging that allows quantification of the elasticity of tissue. The aim of our study was to determine if the elasticity of para-urethral tissue correlates with urethral mobility and urinary incontinence (UI). Ninety-nine unselected women were investigated with SE. They were given a standardized interview about UI, and SE raw data for the para-urethral tissue were acquired in a sagittal standard urethra-symphysis view while being stimulated by a coughing fit...
January 17, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28107963/chromatographic-fingerprinting-as-a-strategy-to-identify-regulated-plants-in-illegal-herbal-supplements
#15
D Custers, N Van Praag, P Courselle, S Apers, E Deconinck
Erectile dysfunction (ED) is a sexual disorder characterized by the inability to achieve or maintain a sufficiently rigid erection. Despite the availability of non-invasive oral treatment options, many patients turn to herbal alternatives. Furthermore, herbal supplements are increasingly gaining popularity in industrialized countries and, as a consequence, quality control is a highly important issue. Unfortunately, this is not a simple task since plants are often crushed and mixed with other plants, which complicates their identification by usage of classical approaches such as microscopy...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107956/electro-kinetic-assisted-electrospray-ionization-for-enhanced-complex-sample-analysis
#16
Zezhen Zhang, Muyi He, Lingyan Liu, Xingchuang Xiong, Xiang Fang, Wei Xu
In this work, an electro-kinetic assisted electrospray ionization (EK-ESI) source is proposed and characterized. In EK-ESI, an additional auxiliary electric field is introduced in the liquid flow of a nano-ESI. While traveling forward in the electrospray flow, charged analytes also experience a reverse electric field, which pushes them backwards. As a result, analytes could be separated preliminarily based on their electrophoretic mobility during the electrospray process. Experiments show that EK-ESI can reduce charge competition effects in the ESI source and increase biomolecule detection sensitivities...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107942/stereoselective-quantification-of-triticonazole-in-vegetables-by-supercritical-fluid-chromatography
#17
Qi Tan, Jun Fan, Ruiqi Gao, Rujian He, Tai Wang, Yaomou Zhang, Weiguang Zhang
A highly fast analytical method though supercritical fluid chromatography (SFC) has been developed to quantify triticonazole enantiomers in cucumbers and tomatoes. Effects of organic modifier type and concentration on chiral separation and quantification of standard solution as well as matrix-matched standard solutions have been studied in detail. Among three organic modifiers, better separation of triticonazole racemate was achieved with 20% ethanol (v/v). The run time in SFC (ca 3min) with CO2-ethanol (80:20, v/v) as the mobile phase was six-fold shorter than HPLC analysis (about 18min)...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107903/ion-mobility-spectrometry-as-a-fast-analytical-tool-in-benzalkonium-chloride-homologs-determination
#18
D Gallart-Mateu, S Armenta, F A Esteve-Turrillas, M de la Guardia
A novel procedure is proposed for the determination by ion mobility spectrometry (IMS) of C12, C14 and C16 benzalkonium chloride (BAC) homologs. The proposed method requires minimum sample treatment and the measurement was made in less than one minute. A high sensitivity was obtained for BAC determination by IMS with limit of detection values from 37 to 69µgL(-1). Accuracy of the proposed methodology was evaluated through the analysis of aqueous and alcoholic samples spiked with BAC at concentration levels from 0...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107813/prevalence-of-frailty-in-canadians-18-79-years-old-in-the-canadian-health-measures-survey
#19
Dustin Scott Kehler, Thomas Ferguson, Andrew N Stammers, Clara Bohm, Rakesh C Arora, Todd A Duhamel, Navdeep Tangri
BACKGROUND: There is little certainty as to the prevalence of frailty in Canadians in younger adulthood. This study examines and compares the prevalence of frailty in Canadians 18-79 years old using the Accumulation of Deficits and Fried models of frailty. METHODS: The Canadian Health Measures Study data were used to estimate the prevalence of frailty in adults 18-79 years old. A 23-item Frailty Index using the Accumulation of Deficits Model (cycles 1-3; n = 10,995) was developed; frailty was defined as having the presence of 25% or more indices, including symptoms, chronic conditions, and laboratory variables...
January 21, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28107796/social-and-structural-factors-related-to-hiv-risk-among-truck-drivers-passing-through-the-iringa-region-of-tanzania
#20
Anjalee Kohli, Deanna Kerrigan, Heena Brahmbhatt, Samuel Likindikoki, Justin Beckham, Ard Mwampashi, Jessie Mbwambo, Caitlin E Kennedy
Truck drivers and their assistants have been identified as groups at higher risk for HIV infection. We sought to identify and describe the social and structural factors that may contribute to HIV risk among truck drivers who visit rest stops in Iringa, Tanzania, a region characterized by high levels of migration and mobility. This analysis was part of a comprehensive strategic assessment to examine HIV risk factors in Iringa. This analysis focuses on 11 in-depth interviews with truck drivers and a transport owner...
January 20, 2017: AIDS Care
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