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https://www.readbyqxmd.com/read/27935195/ultrahigh-molecular-weight-polyethylene-graphene-oxide-nanocomposites-wear-characterization-and-biological-response-to-wear-particles
#1
S Suñer, N Gowland, R Craven, R Joffe, N Emami, J L Tipper
In the field of total joint replacements, polymer nanocomposites are being investigated as alternatives to ultrahigh molecular weight polyethylene (UHMWPE) for acetabular cup bearings. The objective of this study was to investigate the wear performance and biocompatibility of UHMWPE/graphene oxide (GO) nanocomposites. This study revealed that low concentrations of GO nanoparticles (0.5 wt %) do not significantly alter the wear performance of UHMWPE. In contrast, the addition of higher concentrations (2 wt %) led to a significant reduction in wear...
December 9, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27933694/association-of-coffee-consumption-and-chronic-kidney-disease-a-meta-analysis
#2
Karn Wijarnpreecha, Charat Thongprayoon, Natanong Thamcharoen, Panadeekarn Panjawatanan, Wisit Cheungpasitporn
BACKGROUND/OBJECTIVES: The risk of chronic kidney disease (CKD) in individuals who regularly drink coffee is controversial. The aim of this meta-analysis was to evaluate the association between coffee consumption and CKD. METHODS: A literature search was performed using MEDLINE, EMBASE, and Cochrane Database of Systematic Reviews from inception until April 2016. We included studies that reported odd ratios or hazard ratios comparing the risk of CKD in individuals consuming significant amount of coffee vs...
December 9, 2016: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/27933422/dual-mobility-cups-in-revision-total-hip-arthroplasty
#3
Anthony Viste, Romain Desmarchelier, Michel-Henri Fessy
AIM: The purpose of our study was to evaluate the dislocation and aseptic loosening rates of a dual mobility construct in revision total hip arthroplasty (THA). METHODS: Three hundred thirty-four revision THAs performed between 2006 and 2011, using a dual mobility cup, were included in this retrospective study. The indications for revision were aseptic loosening (70%), infection (21%) and recurrent instability (9%). The minimum follow-up was five years (mean 7 ± 2 years, maximum 10 years)...
December 8, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27930761/transoral-robotic-surgery-assisted-endoscopy-with-primary-site-detection-and-treatment-in-occult-mucosal-primaries
#4
Kyle M Hatten, Bert W O'Malley, Andres M Bur, Mihir R Patel, Christopher H Rassekh, Jason G Newman, Steven B Cannady, Ara A Chalian, Benjamin L Hodnett, Alexander Lin, John N Lukens, Roger B Cohen, Joshua M Bauml, Kathleen T Montone, Virginia A Livolsi, Gregory S Weinstein
Importance: Management of cervical lymph node metastasis without a known primary tumor is a diagnostic and treatment challenge for head and neck oncologists. Identification of the occult mucosal primary tumor minimizes the morbidity of treatment. Objective: To analyze the role of transoral robotic surgery (TORS) in facilitating the identification of a primary tumor site for patients presenting with squamous cell carcinoma of unknown primary (CUP). In addition, we assessed treatment deintensification by determining the number of patients who did not undergo definitive radiation therapy and chemotherapy...
December 8, 2016: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/27930707/native-phytoremediation-potential-of-urtica-dioica-for-removal-of-pcbs-and-heavy-metals-can-be-improved-by-genetic-manipulations-using-constitutive-camv-35s-promoter
#5
Jitka Viktorova, Zuzana Jandova, Michaela Madlenakova, Petra Prouzova, Vilem Bartunek, Blanka Vrchotova, Petra Lovecka, Lucie Musilova, Tomas Macek
Although stinging nettle (Urtica dioica) has been shown to reduce HM (heavy metal) content in soil, its wider phytoremediation potential has been neglected. Urtica dioica was cultivated in soils contaminated with HMs or polychlorinated biphenyls (PCBs). After four months, up to 33% of the less chlorinated biphenyls and 8% of HMs (Zn, Pb, Cd) had been removed. Bacteria were isolated from the plant tissue, with the endophytic bacteria Bacillus shackletonii and Streptomyces badius shown to have the most significant effect...
2016: PloS One
https://www.readbyqxmd.com/read/27926530/the-association-between-serum-uric-acid-and-glaucoma-severity-in-primary-angle-closure-glaucoma-a-retrospective-case-control-study
#6
Shengjie Li, Mingxi Shao, Binghua Tang, Aiping Zhang, Wenjun Cao, Xinghuai Sun
Uric acid (UA) is a major antioxidant molecule and has been hypothesized to have a protective effect on the central nervous system against oxidative damage. We prospectively investigated the serum concentration of UA in primary angle closure glaucoma (PACG), and explored the association between serum concentration of UA and the severity of PACG. Using a retrospective case-control study design, 886 PACG subjects and 994 control subjects who attended the Eye & ENT Hospital of Fudan University, were eligible for this study...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27924742/dual-mobility-total-hip-replacement-in-a-high-risk-population
#7
Jatinder Singh Luthra, Amur Al Riyami, Mohamad Kasim Allami
OBJECTIVE: The purpose of the study was to evaluate results of dual mobility total replacement in a high risk population who take hip into hyperflexed position while sitting and praying on the floor. METHOD: The study included 65 (35 primary total replacement and 30 complex total hip replacement) cases of total hip replacement using avantage privilege dual mobility cup system from biomet. A cemented acetabular component and on femoral side a bimetric stem, either cemented or uncemented used depending on the canal type...
2016: SICOT-J
https://www.readbyqxmd.com/read/27924340/exosome-like-silica-nanoparticles-a-novel-ultrasound-contrast-agent-for-stem-cell-imaging
#8
Fang Chen, Ming Ma, Junxin Wang, Fang Wang, Shi-Xiong Chern, Eric Ruike Zhao, Anamik Jhunjhunwala, Sean Darmadi, Hangrong Chen, Jesse V Jokerst
Ultrasound is critical in many areas of medicine including obstetrics, oncology, and cardiology with emerging applications in regenerative medicine. However, one critical limitation of ultrasound is the low contrast of target tissue over background. Here, we describe a novel cup-shaped silica nanoparticle that is reminiscent of exosomes and that has significant ultrasound impedance mismatch for labelling stem cells for regenerative medicine imaging. These exosome-like silica nanoparticles (ELS) were created through emulsion templating and the silica precursors bis(triethoxysilyl)ethane (BTSE) and bis(3-trimethoxysilyl-propyl)amine (TSPA)...
December 7, 2016: Nanoscale
https://www.readbyqxmd.com/read/27923597/long-term-results-of-cementless-total-hip-arthroplasty-with-subtrochanteric-shortening-osteotomy-in-crowe-type-iv-developmental-dysplasia
#9
Duan Wang, Ling-Li Li, Hao-Yang Wang, Fu-Xing Pei, Zong-Ke Zhou
BACKGROUND: When surgeons reconstruct hips with a high dislocation related to severe developmental dysplasia of the hip (DDH) in total hip arthroplasty (THA), archiving long-term stable implant fixation and improving patient function and satisfaction remain challenging. The purpose of this study was to evaluate the 10-year outcomes of transverse subtrochanteric shortening osteotomy in cementless, modular THA in Crowe type IV-Hartofilakidis type III DDH. METHODS: We reviewed 62 patients (76 hips) who underwent cementless THA with transverse subtrochanteric shortening osteotomy from 2002-2010...
November 15, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27922983/current-construct-options-for-revision-of-large-acetabular-defects-a-systematic-review
#10
Marieke Baauw, Miranda L van Hooff, Maarten Spruit
BACKGROUND: Many treatment options are available for the revision of large acetabular defects. Debate continues as to which technique is most effective. METHODS: A systematic review was performed according to the Meta-analysis of Observational Studies in Epidemiology (MOOSE) guidelines to evaluate the effectiveness of interventions for large acetabular defects. Quality assessment was performed next with use of 8 items of the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) checklist for reports of observational studies...
November 8, 2016: JBJS Reviews
https://www.readbyqxmd.com/read/27920813/densitometric-evaluation-of-bone-prosthetic-counterface-in-hip-and-knee-arthroplasty-with-modern-implants
#11
Andrea Cozzi Lepri, Marco Giorgini, Carla Signorini, Christian Carulli, Roberto Civinini, Maria Luisa Brandi, Massimo Innocenti
INTRODUCTION: Recent acquisitions of the complex mechanisms of osseointegration between implants and host bone have gained attention, accordingly to the methods of evaluation of these interactions. DEXA analysis is considered an useful tool to assess such phenomena, in order to analyse in a quantitative manner the local metabolic activity of the bone, and to evaluate over the time the integration between host bone and prosthetic components. The purpose of the present study is to report about a preliminary experience in the analysis of osseointegration processes of patients undergoing a primary Total Hip Arthroplasty (THA) or a revision Total Knee Arthroplasty (rTKA)...
May 2016: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/27920583/intellijoint-hip-%C3%A2-a-3d-mini-optical-navigation-tool-for-improving-intraoperative-accuracy-during-total-hip-arthroplasty
#12
Wayne G Paprosky, Jeffrey M Muir
Total hip arthroplasty is an increasingly common procedure used to address degenerative changes in the hip joint due to osteoarthritis. Although generally associated with good results, among the challenges associated with hip arthroplasty are accurate measurement of biomechanical parameters such as leg length, offset, and cup position, discrepancies of which can lead to significant long-term consequences such as pain, instability, neurological deficits, dislocation, and revision surgery, as well as patient dissatisfaction and, increasingly, litigation...
2016: Medical Devices: Evidence and Research
https://www.readbyqxmd.com/read/27918827/optic-radiations-microstructural-changes-in-glaucoma-and-association-with-severity-a-study-using-3tesla-magnetic-resonance-diffusion-tensor-imaging
#13
Laury Tellouck, Muriel Durieux, Pierrick Coupé, Audrey Cougnard-Grégoire, Joy Tellouck, Thomas Tourdias, Fanny Munsch, Arnaud Garrigues, Catherine Helmer, Florence Malet, Jean-François Dartigues, Vincent Dousset, Cécile Delcourt, Cédric Schweitzer
Purpose: To compare microstructural changes along the optical radiations and brain structure volumes between glaucoma and control subjects using in vivo magnetic resonance imaging and to analyze their association with severity of the disease. Methods: A total of 50 open-angle glaucoma subjects and 50 healthy age- and sex-matched controls underwent detailed ophthalmologic examinations (including visual field testing [VF], funduscopy, and spectral-domain optical coherence tomography) as well as diffusion tensor imaging (DTI) using 3...
December 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27918279/the-sensory-features-of-a-food-cue-influence-its-ability-to-act-as-an-incentive-stimulus-and-evoke-dopamine-release-in-the-nucleus-accumbens-core
#14
Bryan F Singer, Myranda A Bryan, Pavlo Popov, Raymond Scarff, Cody Carter, Erin Wright, Brandon J Aragona, Terry E Robinson
The sensory properties of a reward-paired cue (a conditioned stimulus; CS) may impact the motivational value attributed to the cue, and in turn influence the form of the conditioned response (CR) that develops. A cue with multiple sensory qualities, such as a moving lever-CS, may activate numerous neural pathways that process auditory and visual information, resulting in CRs that vary both within and between individuals. For example, CRs include approach to the lever-CS itself (rats that "sign-track"; ST), approach to the location of reward delivery (rats that "goal-track"; GT), or an "intermediate" combination of these behaviors...
November 2016: Learning & Memory
https://www.readbyqxmd.com/read/27917815/sleep-quality-differs-between-athletes-and-non-athletes
#15
Havva Demirel
PURPOSE: Sufficient sleep or sleep of sufficient quality is essential for the health of children, adolescents and adults, as sleep influences almost all dimensions of life. The purpose of this study was to investigate the possible positive effects of sportsmanship on sleep quality and to assess the possible differences in sleep quality between athletes and non-athletes. METHODS: Sedentary or non-athletes subjects (n=103) and athletes (n=93) participated in this study...
December 1, 2016: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
https://www.readbyqxmd.com/read/27917413/efficacy-of-s-lacosamide-in-preclinical-models-of-cephalic-pain
#16
Aubin Moutal, Nathan Eyde, Edwin Telemi, Ki Duk Park, Jennifer Y Xie, David W Dodick, Frank Porreca, Rajesh Khanna
Migraine is one of the world's most common neurological disorders. Current acute migraine treatments have sub-optimal efficacy and new therapeutic options are needed. Approaches targeting calcitonin gene related peptide (CGRP) signaling are clinically effective but small molecule antagonists have not been advanced due to toxicity. In this study, we explored the axonal growth/specification collapsin response mediator protein 2 (CRMP2) as a novel "druggable" target for inhibiting CGRP release and for potential relevance for treatment of migraine pain...
June 2016: Pain Reports (Baltimore, Md.)
https://www.readbyqxmd.com/read/27916532/primary-total-hip-arthroplasty-in-catalonia-what-is-the-clinical-evidence-that-supports-our-prosthesis
#17
D Chaverri-Fierro, L Lobo-Escolar, M Espallargues, O Martínez-Cruz, L Domingo, M Pons-Cabrafiga
INTRODUCTION: The implementation of National Prostheses Registries allows us to obtain a large amount of data and make conclusions in order to improve the use of them. Sweden was the first country to implement a National Prostheses Registry in 1979. Catalonia has been doing this since 2005. The aim of our study is to analyse the evidence that supports primary total hip replacement in Catalonia in the last 9 years, based on the Arthroplasty Registry of Catalonia (RACat). MATERIAL AND METHODS: A review of the literature was carried out of the prosthesis (acetabular cups/stems) reported in the RACat between the period 2005 to 2013 in the following databases: ODEP (Orthopaedic Data Evaluation Panel), TRIP database, PubMed, and Google Scholar...
December 1, 2016: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/27914989/transcriptome-analysis-of-adult-and-fetal-trabecular-meshwork-cornea-and-ciliary-body-tissues-by-rna-sequencing
#18
Megan Ulmer Carnes, R Rand Allingham, Allison Ashley-Koch, Michael A Hauser
PURPOSE: To characterize the transcriptional landscape of human adult and fetal trabecular meshwork (TM), cornea, and ciliary body (CB) tissues, and to evaluate the expression level of candidate genes selected from genetic association studies of primary-open angle glaucoma, central corneal thickness, intraocular pressure, vertical cup to disc ratio, and optic nerve parameters. METHODS: Deep RNA sequencing was performed on the selected human tissues. Transcriptome analyses were performed to 1) characterize the total number of expressed genes, 2) identify the most highly expressed genes, 3) estimate the number of novel transcripts, and 4) evaluate the expression of candidate genes in each tissue...
November 30, 2016: Experimental Eye Research
https://www.readbyqxmd.com/read/27914776/seasonal-variability-of-equilibrium-factor-and-unattached-fractions-of-radon-and-thoron-in-different-regions-of-punjab-india
#19
Komal Saini, Parminder Singh, Prabhjot Singh, B S Bajwa, B K Sahoo
A survey was conducted to estimate equilibrium factor and unattached fractions of radon and thoron in different regions of Punjab state, India. Pin hole based twin cup dosimeters and direct progeny sensor techniques have been utilized for estimation of concentration level of radon, thoron and their progenies. Equilibrium factor calculated from radon, thoron and their progenies concentration has been found to vary from 0.15 to 0.80 and 0.008 to 0.101 with an average value of 0.44 and 0.036 for radon and thoron respectively...
November 30, 2016: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/27914151/-analysis-of-the-cochrane-review-portion-package-or-tableware-size-for-changing-selection-and-consumption-of-food-alcohol-and-tobacco-cochrane-database-syst-rev-2015-09-cd011045
#20
Gonçalo S Duarte, Filipe Brogueira Rodrigues, João Costa, António Vaz-Carneiro
Some of the main causes of mortality and morbidity among the developed countries - such as the cardiovascular, neurological and oncologic diseases - are deeply associated with modifiable risk factors. Primordial/primary prevention strategies that alter our environment can have an impact on these risk factors. The authors of this Cochrane systematic review sought evidence from randomized controlled trials to study the effect of the size of portions, packages, dishes and cups, as well as their respective formats, on the consumption and selection of food, alcoholic and non-alcoholic beverages and tobacco products...
August 2016: Acta Médica Portuguesa
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