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https://www.readbyqxmd.com/read/28330526/different-spectrophotometric-and-chromatographic-methods-for-determination-of-mepivacaine-and-its-toxic-impurity
#1
Nada S Abdelwahab, Nehal F Fared, Mohamed Elagawany, Esraa H Abdelmomen
Stability-indicating spectrophotometric, TLC-densitometric, and ultra-performance LC (UPLC) methods were developed forthe determination of mepivacaine HCl (MEP) in the presence of its toxic impurity, 2,6-dimethylanaline (DMA). Different spectrophotometric methods were developed for the determination of MEP and DMA. In a dual-wavelength method combined with direct spectrophotometric measurement, the absorbance difference between 221.4 and 240 nm was used for MEP measurements, whereas the absorbance at 283 nm was used for measuring DMA in the binary mixture...
February 21, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28329121/very-low-calorie-diets-for-weight-loss-in-obese-older-adults-a-randomized-trial
#2
Cilla J Haywood, Luke A Prendergast, Katrina Purcell, Lauren Le Fevre, Wen Kwang Lim, Mary Galea, Joseph Proietto
Background: Obesity contributes to disability in older adults, and this is offset by weight loss and exercise. Very Low Calorie Diets (VLCDs) achieve rapid weight loss; however, these have not been rigorously evaluated in older people. Methods: A randomized trial was conducted from August 2012 through December 2015. The intervention was 12 weeks of thrice weekly exercise combined with either healthy eating advice (Ex/HE), hypocaloric diet (Ex/Diet), or VLCD (Ex/VLCD)...
February 20, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28323846/problems-identified-by-dual-sensory-impaired-older-adults-in-long-term-care-when-using-a-self-management-program-a-qualitative-study
#3
Lieve Roets-Merken, Sytse Zuidema, Myrra Vernooij-Dassen, Marianne Dees, Pieter Hermsen, Gertrudis Kempen, Maud Graff
OBJECTIVE: To gain insights into the problems of dual sensory impaired older adults in long-term care. Insights into these problems are essential for developing adequate policies which address the needs of the increasing population of dual sensory impaired older adults in long-term care. METHODS: A qualitative study was conducted in parallel with a cluster randomized controlled trial. Dual sensory impaired older adults in the intervention group (n = 47, age range 82-98) were invited by a familiar nurse to identify the problems they wanted to address...
2017: PloS One
https://www.readbyqxmd.com/read/28323248/accuracy-and-reproducibility-of-preoperative-three-dimensional-planning-for-total-hip-arthroplasty-using-biplanar-low-dose-radiographs-a-pilot-study
#4
Didier Mainard, Olivier Barbier, Yohann Knafo, Rémi Belleville, Laurence Mainard-Simard, Jean-Baptiste Gross
BACKGROUND: In total hip arthroplasty (THA), the acetabular cup and femoral stem must be correctly sized and positioned to avoid intraoperative and postoperative complications, achieve good functional outcomes and ensure long-term survival. Current two-dimensional (2D) techniques do not provide sufficient accuracy, while low-dose biplanar X-rays (EOS) had not been assessed in this indication. Therefore we performed a case-control study to: 1) evaluate the prediction of stem and cup size for a new 3D planning technique (stereoradiographic imaging plus 3D modeling) in comparison to 2D templating on film radiographs and 2) evaluate the accuracy and reproducibility of this 3D technique for preoperative THA planning...
March 16, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28317284/mir-320a-regulates-high-mobility-group-box-1%C3%A2-expression-and-inhibits-invasion-and-metastasis-in-hepatocellular-carcinoma
#5
Guixiang Lv, Mingjuan Wu, Meijie Wang, Xiaochen Jiang, Jingli Du, Kaili Zhang, Dongliang Li, Ning Ma, Yahui Peng, Lujing Wang, Lingyun Zhou, Weiming Zhao, Yufei Jiao, Xu Gao, Zheng Hu
BACKGROUND & AIMS: Several studies have shown that miR-320a induces apoptosis, inhibits cell proliferation, and affects cell cycle progression as a tumor suppressor in many cancers. However, the involvement of miR-320a in the invasion and metastasis of hepatocellular carcinoma (HCC) is still unknown. METHODS: Endogenous miR-320a and high mobility group box 1 (HMGB1) expressions were assayed by real-time PCR. Luciferase activities were measured using a dual-luciferase reporter assay system...
March 19, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28314186/mobility-indices-and-doses-from-210-po-and-210-pb-activity-concentrations-data-in-brazilian-spas-groundwaters
#6
Daniel Marcos Bonotto, Ana Maria Marinello Assis de Oliveira
(210)Po and (210)Pb activity concentrations in spas groundwaters occurring at São Paulo (SP) and Minas Gerais (MG) states, Brazil, have been reported in this paper with a dual purpose: to compare different indices for evaluating the radionuclides mobility into waters and to evaluate the drinking water quality from dose calculations. The waters (75 sampling points) are extensively used for drinking in public places, bottling and bathing purposes, among other. The samples were taken from springs and wells drilled at different aquifer systems inserted in Paraná and Southeastern Shield hydrogeological provinces...
March 14, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28304305/combined-dual-task-gait-training-and%C3%A2-aerobic-exercise-to-improve-cognition-%C3%A2-mobility-and%C3%A2-vascular-health-in%C3%A2-community-dwelling-older-adults-at%C3%A2-risk-for-future-cognitive-decline1
#7
Michael A Gregory, Narlon C Boa Sorte Silva, Dawn P Gill, Cheri L McGowan, Teresa Liu-Ambrose, J Kevin Shoemaker, Vladimir Hachinski, Jeff Holmes, Robert J Petrella
This 6-month experimental case series study investigated the effects of a dual-task gait training and aerobic exercise intervention on cognition, mobility, and cardiovascular health in community-dwelling older adults without dementia. Participants exercised 40 min/day, 3 days/week for 26 weeks on a Biodex GaitTrainer2 treadmill. Participants were assessed at baseline (V0), interim (V1: 12-weeks), intervention endpoint (V2: 26-weeks), and study endpoint (V3: 52-weeks). The study outcomes included: cognition [executive function (EF), processing speed, verbal fluency, and memory]; mobility: usual & dual-task gait (speed, step length, and stride time variability); and vascular health: ambulatory blood pressure, carotid arterial compliance, and intima-media thickness (cIMT)...
March 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28303542/sorption-and-desorption-of-silver-ions-by-bentonite-clays
#8
Leonel Vinicius Constantino, Juliana Nunes Quirino, Alessandra Maffei Monteiro, Taufik Abrão, Paulo Sérgio Parreira, Alexandre Urbano, Maria Josefa Santos
Anthropogenic activities have increased the concentration of metal species in the environment. The toxicity of silver ions to aquatic and terrestrial organisms has required monitoring by analytical methods, besides actions to promote its control as pollutant. Sorption and desorption processes are directly related to the mobility and availability of metal ions in the environment. In this context, clay minerals can be used for pre-concentration, removal and recovery of silver ions from aqueous solution. Herein, two bentonite clays (BaVC-1 and SWy-2) were characterised and applied to investigate the sorption and desorption of silver ions...
March 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28296537/microfluidic-mobility-shift-assay-for-real-time-analysis-of-peptide-n-palmitoylation
#9
Thomas Lanyon-Hogg, Neki V Patel, Markus Ritzefeld, Katherine J Boxall, Rosemary Burke, Julian Blagg, Anthony I Magee, Edward W Tate
The Hedgehog pathway is a key developmental signaling pathway but is also implicated in many types of cancer. The extracellular signaling protein Sonic hedgehog (Shh) requires dual lipidation for functional signaling, whereby N-terminal palmitoylation is performed by the enzyme Hedgehog acyltransferase (Hhat). Hhat is an attractive target for small-molecule inhibition to arrest Hedgehog signaling, and methods for assaying Hhat activity are central to understanding its function. However, all existing assays to quantify lipidation of peptides suffer limitations, such as safety hazards, high costs, extensive manual handling, restriction to stopped-assay measurements, or indirect assessment of lipidation...
April 2017: SLAS Discov
https://www.readbyqxmd.com/read/28294224/creation-of-a-dual-porosity-and-dual-depth-micromodel-for-the-study-of-multiphase-flow-in-complex-porous-media
#10
Wonjin Yun, Cynthia M Ross, Sophie Roman, Anthony R Kovscek
Silicon-based microfluidic devices, so-called micromodels in this application, are particularly useful laboratory tools for the direct visualization of fluid flow revealing pore-scale mechanisms controlling flow and transport phenomena in natural porous media. Current microfluidic devices with uniform etched depths, however, are limited when representing complex geometries such as the multiple-scale pore sizes common in carbonate rocks. In this study, we successfully developed optimized sequential photolithography to etch micropores (1...
March 15, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28291441/surgical-treatment-of-bilateral-femoral-stress-fractures-related-with-long-term-alendronate-therapy
#11
Ulunay Kanatlı, M Baybars Ataoğlu, Mustafa Özer, H Nevzat Topçu, Mehmet Çetinkaya
A 67-year-old female patient admitted to our outpatient clinic suffering from pain in both thighs for one year without any history of trauma. Patient was receiving alendronate therapy for five years. Physical examination revealed pain increasing with weight-bearing in both thighs with full range of hip and knee movements. Radiographs showed an area of thickened cortex of middle femoral diaphysis in both femurs, but no fracture. Bone scan showed a single area of increased uptake of radioisotope. These images were compatible with stress fractures of both femurs...
April 2017: Eklem Hastalıkları Ve Cerrahisi, Joint Diseases & related Surgery
https://www.readbyqxmd.com/read/28288678/mobile-technology-intervention-to-improve-care-coordination-between-hiv-and-substance-use-treatment-providers-development-training-and-evaluation-protocol
#12
Kasey Claborn, Sara Becker, Susan Ramsey, Josiah Rich, Peter D Friedmann
BACKGROUND: People living with HIV (PLWH) with a substance use disorder (SUD) tend to receive inadequate medical care in part because of a siloed healthcare system in which HIV and substance use services are delivered separately. Ideal treatment requires an interdisciplinary, team-based coordinated care approach, but many structural and systemic barriers impede the integration of HIV and SUD services. The current protocol describes the development and preliminary evaluation of a care coordination intervention (CCI), consisting of a tablet-based mobile platform for HIV and SUD treatment providers, an interagency communication protocol, and a training protocol...
March 14, 2017: Addiction Science & Clinical Practice
https://www.readbyqxmd.com/read/28284102/g-protein-coupled-calcium-sensing-receptor-is-a-crucial-mediator-of-mta-induced-biological-activities
#13
Jin Man Kim, Seulki Choi, Kyu Hwan Kwack, Sun-Young Kim, Hyeon-Woo Lee, Kyungpyo Park
Mineral trioxide aggregate (MTA) is a calcium silicate-based bioactive material that has been extensively used in dentistry. MTA has been highlighted in its diverse biological functions and excellent clinical outcomes. However, limited insight into the intracellular signaling pathways has been provided to explain the biological activities of MTA. Here, we firstly elucidate that the extracellular calcium-sensing receptor (CaSR) is a major signaling mediator of MTA-induced biological reactions through versatile live imaging techniques of human dental pulp cells (hDPCs)...
February 28, 2017: Biomaterials
https://www.readbyqxmd.com/read/28276753/dual-mobility-acetabular-cup-for-total-hip-arthroplasty-use-with-caution
#14
Hamed Vahedi, Asim M Makhdom, Javad Parvizi
Dual-mobility cups were introduced to reduce the incidence of dislocation after total hip arthroplasty (THA). The biomechanics of dual-mobility cups allow for greater range of motion, jump distance and better stability when compared to conventional cups in THA. These cups can be very beneficial in THA particularly when the hip instability is a concern such as elderly patients, obese, hip fracture patients, those with neuromuscular diseases, or patients undergoing revision THA for instability. Areas covered: An extensive search is conducted in PubMed and Google scholar to find past five years publications relevant to dual-mobility cups in THA...
March 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28275893/multiquadrant-robotic-colorectal-surgery-the-da-vinci-xi-vs-si-comparison
#15
Bogdan Protyniak, Jeffrey Jorden, Russell Farmer
The newly introduced da Vinci Xi Surgical System hopes to address the shortcomings of its predecessor, specifically robotic arm restrictions and difficulty working in multiple quadrants. We compare the two robot platforms in multiquadrant surgery at a major colorectal referral center. Forty-four patients in the da Vinci Si group and 26 patients in the Xi group underwent sigmoidectomy or low anterior resection between 2014 and 2016. Patient demographics, operative variables, and postoperative outcomes were compared using descriptive statistics...
March 8, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28272778/the-activity-of-the-carbamoyl-phosphate-synthase-1-promoter-in-human-liver-derived-cells-is-dependent-on-hepatocyte-nuclear-factor-3-beta
#16
Zhanfei Chen, Nanhong Tang, Xiaoqian Wang, Yanling Chen
Carbamoyl phosphate synthase 1 (CPS1) is the rate-limiting enzyme in the first step of the urea cycle and an indispensable enzyme in the metabolism of human liver. However, CPS1 epigenetic regulation involves promoter analysis and the role of liver-enriched transcription factors (LETFs), which is not fully elucidated. In this work, the promoter region of hCPS1 gene was cloned, and its activity was investigated. An LETF, hepatocyte nuclear factor 3-beta (HNF3β), was found to promote the transcriptional expression of CPS1 in liver-derived cell lines...
March 8, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28268311/behavioral-informatics-dynamical-models-for-measuring-and-assessing-behaviors-for-precision-interventions
#17
Misha Pavel, Holly Jimison, Bonnie Spring
Poor health-related behaviors represent a major challenge to healthcare due to their significant impact on chronic and acute diseases and their effect on the quality of life. Recent advances in technology have enabled an unprecedented opportunity to assess objectively, unobtrusively and continuously human behavior and have opened the possibility of optimizing individual-tailored, precision interventions within the framework of behavioral informatics. A key prerequisite for this optimization is the ability to assess and predict effects of interventions...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28267685/mobile-phone-types-and-sar-characteristics-of-the-human-brain
#18
Ae-Kyoung Lee, Seon-Eui Hong, Jong-Hwa Kwon, Hyung-Do Choi, Elisabeth Cardis
Mobile phones differ in terms of their operating frequency, outer shape, and form and location of the antennae, all of which affect the spatial distributions of their electromagnetic field and the level of electromagnetic absorption in the human head or brain. For this paper, the specific absorption rate (SAR) was calculated for four anatomical head models at different ages using 11 numerical phone models of different shapes and antenna configurations. The 11 models represent phone types accounting for around 86% of the approximately 1400 commercial phone models released into the Korean market since 2002...
April 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28263879/ctenopharyngodon-idella-irf2-and-atf4-down-regulate-the-transcriptional-level-of-prkra
#19
Keyi Huang, Guoqin Qi, Zhicheng Sun, Xiancheng Liu, Xiaowen Xu, Haizhou Wang, Zhen Wu, Yiqi Wan, Chengyu Hu
PRKRA (interferon-inducible double-stranded RNA-dependent protein kinase activator A) is a protective protein which regulates the adaptation of cells to ER stress and virus-stimulated signaling pathways by activating PKR. In the present study, a grass carp (Ctenopharyngodon idella) PRKRA full-length cDNA (named CiPRKRA, KT891991) was cloned and identified. The full-length cDNA is comprised of a 5' UTR (36 bp), a 3' UTR (350 bp) and the longest ORF (882 bp) encoding a polypeptide of 293 amino acids. The deduced amino acid sequence of CiPRKRA contains three typical dsRNA binding motifs (dsRBM)...
March 2, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28258925/parkinsonian-gait-improves-with-bilateral-subthalamic-nucleus-deep-brain-stimulation-during-cognitive-multi-tasking
#20
Gaurav Chenji, Melissa L Wright, Kelvin L Chou, Rachael D Seidler, Parag G Patil
BACKGROUND: Gait impairment in Parkinson's disease reduces mobility and increases fall risk, particularly during cognitive multi-tasking. Studies suggest that bilateral subthalamic deep brain stimulation, a common surgical therapy, degrades motor performance under cognitive dual-task conditions, compared to unilateral stimulation. OBJECTIVE: To measure the impact of bilateral versus unilateral subthalamic deep brain stimulation on walking kinematics with and without cognitive dual-tasking...
February 24, 2017: Parkinsonism & related Disorders
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