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https://www.readbyqxmd.com/read/28441721/pathogenic-or-therapeutic-extracellular-vesicles-in-rheumatic-diseases-role-of-mesenchymal-stem-cell-derived-vesicles
#1
REVIEW
Stella Cosenza, Maxime Ruiz, Marie Maumus, Christian Jorgensen, Danièle Noël
Extracellular vesicles (EVs) are important mediators of cell-to-cell communication pathways via the transport of proteins, mRNA, miRNA and lipids. There are three main types of EVs, exosomes, microparticles and apoptotic bodies, which are classified according to their size and biogenesis. EVs are secreted by all cell types and their function reproduces that of the parental cell. They are involved in many biological processes that regulate tissue homeostasis and physiopathology of diseases. In rheumatic diseases, namely osteoarthritis (OA) and rheumatoid arthritis (RA), EVs have been isolated from synovial fluid and shown to play pathogenic roles contributing to progression of both diseases...
April 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28440860/doppler-ultrasonographic-measurement-of-short-term-effects-of-valsalva-maneuver-on-retrobulbar-blood-flow
#2
Sabit Kimyon, Ahmet Mete, Alper Mete, Duçem Mete
BACKGROUND: To investigate the effects of Valsalva maneuver (VM) on retrobulbar blood flow parameters in healthy subjects. METHODS: Participants without any ophthalmologic or systemic pathology were examined in supine position with color and pulsed Doppler imaging for blood flow measurement, via a paraocular approach, in the ophthalmic artery (OA), central retinal artery (CRA), central retinal vein (CRV), nasal posterior ciliary artery (NPCA), and temporal posterior ciliary artery (TPCA), 10 seconds after a 35- to 40-mm Hg expiratory pressure was reached...
April 25, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28439964/global-and-targeted-metabolomics-of-synovial-fluid-discovers-special-osteoarthritis-metabolites
#3
Kaidi Zheng, Shanmin Ni, Huaijun Chen, Shenmin Lou, Mengting Hu, Li Sun, Xinyu Yang
PURPOSE: To identify special metabolites in synovial fluid of osteoarthritis (OA) via a metabolomics approach. METHOD: Synovial fluid of 35 participants (25 OA patients and 10 controls) was detected by GC-TOF/MS and multivariate data analysis was applied to analyze correlation among the observations. Different metabolites were screened by VIP value (VIP > 1), student t test (p < 0.05), and fold change (fold > 1.5), and verified with the standard metabolites in the synovial fluid of 24 OA patients and 11 controls by LC/MS...
April 25, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28439933/effect-of-anti-ige-in-occupational-asthma-caused-by-exposure-to-low-molecular-weight-agents
#4
M Ollé-Monge, M J Cruz, S Gomez-Ollés, I Ojanguren, J Vanoirbeek, X Muñoz
BACKGROUND: The role of immunoglobulin (Ig)-E in occupational asthma (OA) due to low molecular weight (LMW) agents is not well established compared to classical atopic asthma. In the present study we evaluate whether anti-IgE monoclonal antibody (mAb) has an effect in a mouse model of OA, using persulfate salts. METHODS: On days 1 and 8, BALB/C mice were dermally sensitized with 5% ammonium persulfate (AP) or dimethyl sulfoxide (DMSO). On days 15, 18 and 21 animals were injected intraperitoneally with anti-IgE mAb or PBS 6 hours before challenge with AP or saline...
April 25, 2017: Allergy
https://www.readbyqxmd.com/read/28439705/cementless-oxford-medial-unicompartimental-knee-replacement-an-independent-series-with-a-5-year-follow-up
#5
Benjamin Panzram, Ines Bertlich, Tobias Reiner, Tilman Walker, Sébastien Hagmann, Tobias Gotterbarm
PURPOSE: Cemented unicompartmental knee replacement (UKR) has proven excellent long-term survival rates and functional scores in Price et al. (Clin Orthop Relat Res 435:171-180, 2005), Price and Svard (Clin Orthop Relat Res 469(1):174-179, 2011) and Murray et al. (Bone Joint Surg Br 80(6):983-989, 1998). The main causes for revision, aseptic loosening and pain of unknown origin might be addressed by cementless UKR in Liddle et al. (Bone Joint J 95-B(2):181-187, 2013), Pandit et al. (J Bone Joint Surg Am 95(15):1365-1372, 2013), National Joint Registry for England, Wales and Northern Ireland: 10th Annual Report 2013 ( http://www...
April 24, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28438418/radiological-evaluation-of-ankle-arthrodesis-with-ilizarov-fixation-compared-to-internal-fixation
#6
Piotr Morasiewicz, Maciej Dejnek, Wiktor Urbański, Szymon Łukasz Dragan, Mirosław Kulej, Szymon Feliks Dragan
INTRODUCTION: We asked whether the type of ankle joint arthrodesis stabilization will affect: (1) rate of union, (2) rate of adjacted-joint arthritis, (3) malalignment of the ankle joint. MATERIAL AND METHODS: We retrospectively radiological studied 62 patients who underwent ankle arthrodesis with Ilizarov external fixator stabilization (group 1,n=29) or internal stabilization (group 2,n=33) from 2006 to 2015. Radiologic outcomes were mesure by: (1) rate of union, (2) rate of adjacent-joint arthritis, (3) malalignment of the ankle joint...
April 13, 2017: Injury
https://www.readbyqxmd.com/read/28438380/the-role-of-muscle-strengthening-in-exercise-therapy-for-knee-osteoarthritis-a-systematic-review-and-meta-regression-analysis-of-randomized-trials
#7
REVIEW
Cecilie Bartholdy, Carsten Juhl, Robin Christensen, Hans Lund, Weiya Zhang, Marius Henriksen
OBJECTIVES: To analyze if exercise interventions for patients with knee osteoarthritis (OA) following the American College of Sports Medicine (ACSM) definition of muscle strength training differs from other types of exercise, and to analyze associations between changes in muscle strength, pain, and disability. METHODS: A systematic search in 5 electronic databases was performed to identify randomized controlled trials comparing exercise interventions with no intervention in knee OA, and reporting changes in muscle strength and in pain or disability assessed as standardized mean differences (SMD) with 95% confidence intervals (95% CI)...
March 18, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/28437757/abnormal-loading-and-functional-deficits-are-present-in-both-limbs-before-and-after-unilateral-knee-arthroplasty
#8
A J Metcalfe, C J Stewart, N J Postans, P R Biggs, G M Whatling, C A Holt, A P Roberts
Unilateral knee replacement is often followed by a contralateral replacement in time and the biomechanics of the other knee before and after knee replacement remains poorly understood. The aim of this paper is to distinguish the features of arthritic gait in the affected and unaffected legs relative to a normal population and to assess the objective recovery of gait function post-operatively, with the aim of defining patients at risk of poor post-operative function. Twenty patients with severe knee OA but no pain or deformity in any other lower limb joint were compared to twenty healthy subjects of the same age...
April 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28437567/people-with-patellofemoral-oa-walk-with-different-pelvic-and-hip-kinematics-compared-to-healthy-aged-matched-controls
#9
Kay M Crossley, Anthony G Schache, Hannah Ozturk, Jonathan Lentzos, Melissa Munanto, Marcus G Pandy
Objective, Patellofemoral joint (PFJ) osteoarthritis (OA) is common, yet little is known about how this condition influences lower-limb biomechanical function. This study compared pelvis and lower-limb kinematics in people with and without PFJOA., Methods, Sixty-nine participants (64% women, mean age 56±10 years) with anterior knee pain aggravated by PFJ loaded activities (stair ambulation, rising from sitting, squatting) and radiographic lateral PFJOA on skyline radiographs were compared with 18 controls (78% women, mean age 53±7 years) with no lower-limb pain or radiographic OA...
April 24, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28436958/local-clearance-of-senescent-cells-attenuates-the-development-of-post-traumatic-osteoarthritis-and-creates-a-pro-regenerative-environment
#10
Ok Hee Jeon, Chaekyu Kim, Remi-Martin Laberge, Marco Demaria, Sona Rathod, Alain P Vasserot, Jae Wook Chung, Do Hun Kim, Yan Poon, Nathaniel David, Darren J Baker, Jan M van Deursen, Judith Campisi, Jennifer H Elisseeff
Senescent cells (SnCs) accumulate in many vertebrate tissues with age and contribute to age-related pathologies, presumably through their secretion of factors contributing to the senescence-associated secretory phenotype (SASP). Removal of SnCs delays several pathologies and increases healthy lifespan. Aging and trauma are risk factors for the development of osteoarthritis (OA), a chronic disease characterized by degeneration of articular cartilage leading to pain and physical disability. Senescent chondrocytes are found in cartilage tissue isolated from patients undergoing joint replacement surgery, yet their role in disease pathogenesis is unknown...
April 24, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28436873/predicting-the-quality-of-fused-long-wave-infrared-and-visible-light-images
#11
David Moreno-Villamarin, Hernan Benitez-Restrepo, Alan Bovik
The capability to automatically evaluate the quality of long wave infrared (LWIR) and visible light images has the potential to play an important role in determining and controlling the quality of a resulting fused LWIR-visible light image. Extensive work has been conducted on studying the statistics of natural LWIR and visible images. Nonetheless, there has been little work done on analyzing the statistics of fused LWIR and visible images and associated distortions. In this paper, we analyze five multi-resolution based image fusion methods in regards to several common distortions, including blur, white noise, JPEG compression, and non-uniformity (NU)...
April 19, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28436462/mir-146b-is-down-regulated-during-the-chondrogenic-differentiation-of-human-bone-marrow-derived-skeletal-stem-cells-and-up-regulated-in-osteoarthritis
#12
Emma Budd, María C de Andrés, Tilman Sanchez-Elsner, Richard O C Oreffo
Articular cartilage injury can result in chondrocyte loss and diminishment of specialised extracellular matrix, which can progress to an osteoarthritic (OA) phenotype. Stem cells have emerged as a favourable approach for articular cartilage regeneration. Identification of miRNAs which influence stem cell fate offers new approaches for application of miRNAs to regenerate articular cartilage. Skeletal stem cells (SSCs) isolated from human bone marrow were cultured as high density micromass' using TGF-β3 to induce chondrogenesis...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28436377/analysis-of-therapeutic-effectiveness-of-selected-types-of-collagen-in-prevention-and-treatment-of-degenerative-joint-disease
#13
Wiesław Tomaszewski, Anna Paradowska
Loss of collagen is a natural development accompanying aging of the body. It may be additionally accelerated by various conditions, including osteoarthritis (OA). Within the last two decades numerous and diverse studies have been conducted worldwide with the aim of identifying substances containing collagen, producing therapeutic preparations of expected effectiveness in the prevention and therapy of OA that would be safe to use and developing methods of delivering the final product into the body. The authors reviewed and analysed the latest available literature by selecting papers presenting the findings of studies conducted in line with the principles of Evidence-Based Medicine (EBM)...
January 26, 2017: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28435559/intra-articular-hyaluronic-acid-ha-and-platelet-rich-plasma-prp-injection-versus-hyaluronic-acid-ha-injection-alone-in-patients-with-grade-iii-and-iv-knee-osteoarthritis-oa-a-retrospective-study-on-functional-outcome
#14
C Saturveithan, G Premganesh, S Fakhrizzaki, M Mahathir, K Karuna, K Rauf, H William, H Akmal, N Sivapathasundaram, K Jaspreet
Introduction: Intra-articular hyaluronic acid (HA) is widely utilized in the treatment of knee osteoarthritis whereas platelet rich plasma (PRP) enhances the regeneration of articular cartilage. This study analyses the efficacy of HA and PRP in grade III and IV knee osteoarthritis. Methodology: This is a cross sectional study with retrospective review of 64 patients (101 knees) which includes 56 knees injected with HA+ PRP, and 45 knees with HA only. Results: During the post six months International Knee Documentation Committee (IKDC) evaluation, HA+PRP group showed marked improvement of 24...
July 2016: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/28435151/osteoarthritis-targeting-peripheral-pain-neurons-in-oa
#15
Jessica McHugh
No abstract text is available yet for this article.
April 24, 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/28435050/the-human-krebs-cycle-2-oxoglutarate-dehydrogenase-complex-creates-an-additional-source-of-superoxide-hydrogen-peroxide-from-2-oxoadipate-as-alternative-substrate
#16
Natalia S Nemeria, Gary Gerfen, Elena Guevara, Pradeep Reddy Nareddy, Michal Szostak, Frank Jordan
Recently, we reported that the human 2-oxoglutarate dehydrogenase (hE1o) component of the 2-oxoglutarate dehydrogenase complex (OGDHc) could produce the reactive oxygen species superoxide and hydrogen peroxide (detected by chemical means) from its substrate 2-oxoglutarate (OG), most likely concurrently with one-electron oxidation by dioxygen of the thiamin diphosphate (ThDP)-derived enamine intermediate to a C2α-centered radical (detected by Electron Paramagnetic Resonance) [Nemeria et al., 2014; Ambrus et al...
April 20, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28434545/opportunities-and-obstacles-in-translating-evidence-to-policy-in-occupational-asthma
#17
Susan M Tarlo, Ahmed A Arif, George L Delclos, Paul Henneberger, Jenil Patel
PURPOSE: Occupational asthma (OA), a common respiratory disorder in Western countries, is caused by exposures at the workplace. It is part of a broader definition of work-related asthma (WRA) that also includes pre-existing asthma aggravated by substances present in the workplace environment, and it is potentially preventable. The purpose of this paper is to illustrate preventive measures for occupational asthma by case studies. METHODS: In three case studies we discuss preventive measures that have been associated with reductions in incidence of occupational asthma from natural rubber latex and from diisocyanates as supported by published literature...
March 31, 2017: Annals of Epidemiology
https://www.readbyqxmd.com/read/28433900/production-of-new-human-milk-fat-substitutes-by-enzymatic-acidolysis-of-microalgae-oils-from-nannochloropsis-oculata-and-isochrysis-galbana
#18
Yongjin He, Changyang Qiu, Zheng Guo, Jian Huang, Mingzi Wang, Bilian Chen
Human milk fat substitutes (HMFs) with four kinds of n-3 fatty acid for infant formula were firstly synthesized using triacylglycerols (TAGs) from Nannochloropsis oculata rich in PA at the sn-2 position and free fatty acids (FFAs) from Isochrysis galbana rich in n-3 polyunsaturated fatty acids (n-3 PUFAs-ALA/SDA/DHA) via solvent-free acidolysis with Novozym 435, Lipozyme 435, TL-IM and RM-IM as biocatalysts. The results show that the resulting HMFs contain total n-3 PUFA of 13.92-17.12% and PA of 59.38-68.13% at the sn-2 position under the optimal conditions (mole ratio FFAs/TAG 3:1, 60°C (Novozym 435 and Lipozyme TL-IM) and 50°C (Lipozyme 435 and RM-IM), lipase loading 10%, reaction time 24h)...
April 12, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28433814/synovial-fluid-pro-inflammatory-profile-differs-according-to-the-characteristics-of-knee-pain
#19
Ying Ying Leung, Janet L Huebner, Benjamin Haaland, Steven Bak Siew Wong, Virginia Byers Kraus
OBJECTIVE: The role of inflammation and pain in osteoarthritis (OA) is not fully understood. We evaluated the association between pro-inflammatory biomarkers and pain. METHODS: We used baseline data and samples from a randomized controlled trial of colchicine for symptomatic knee OA. Severity of pain of the more symptomatic knee was assessed by NHANES-I criterion and WOMAC pain index. Pains on movement and at rest were self-reported on an 11-point Likert scale. Severity of radiographic tibiofemoral OA was assessed by Kellgren and Lawrence (KL) grade...
April 19, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28433472/the-influence-of-platelet-rich-plasma-on-synovial-fluid-volumes-protein-concentrations-and-severity-of-pain-in-patients-with-knee-osteoarthritis
#20
Carl P C Chen, Chih-Hsiu Cheng, Chih-Chin Hsu, Hsin-Chin Lin, Yi-Rong Tsai, Jean-Lon Chen
Knee pain is commonly seen in orthopedic and rehabilitation outpatient clinical settings. Patients with knee osteoarthritis (OA) are often complicated with joint soreness, swelling, weakness, and pain. These complaints are often caused by the excessive amount of synovial fluid (SF) accumulated in the bursae around the knee joint. This study was aimed to evaluate the effectiveness of platelet rich plasma (PRP) in treating patients with minor to moderate knee osteoarthritis (OA) combined with supra-patellar bursitis using a proteomic approach and clinical evaluation tool...
April 19, 2017: Experimental Gerontology
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