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Cartilage

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https://www.readbyqxmd.com/read/29779404/is-intra-articular-injection-of-synvisc-associated-with-a-delay-to-knee-arthroplasty-in-patients-with-knee-osteoarthritis
#1
Kevin L Ong, Maria Runa, Edmund Lau, Roy Altman
Objective There is debate about the effectiveness of intra-articular (IA) hyaluronic acid (HA) injections. We asked the following questions: (1) What is the epidemiology of IA HA use in knee arthroplasty (KA) patients? (2) Is Synvisc associated with a delay to KA? (3) Is there a difference in the delay to KA with the number of HA courses? Design The Optum Clinformatics data set (2006-June 2016) was used to identify patients with knee osteoarthritis (OA). Patients who did not receive IA HA were identified, along with those who received Synvisc or non-Synvisc HA...
May 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29701083/elevated-glucose-levels-preserve-glucose-uptake-hyaluronan-production-and-low-glutamate-release-following-interleukin-1%C3%AE-stimulation-of-differentiated-chondrocytes
#2
Victoria Rotter Sopasakis, Ruth Wickelgren, Valentina Sukonina, Camilla Brantsing, Emilia Svala, Elisabeth Hansson, Sven Enerbäck, Anders Lindahl, Eva Skiöldebrand
Objective Chondrocytes are responsible for remodeling and maintaining the structural and functional integrity of the cartilage extracellular matrix. Because of the absence of a vascular supply, chondrocytes survive in a relatively hypoxic environment and thus have limited regenerative capacity during conditions of cellular stress associated with inflammation and matrix degradation, such as osteoarthritis (OA). Glucose is essential to sustain chondrocyte metabolism and is a precursor for key matrix components...
April 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29690771/non-destructive-spectroscopic-assessment-of-high-and-low-weight-bearing-articular-cartilage-correlates-with-mechanical-properties
#3
James P Karchner, Farzad Yousefi, Stephanie R Bitman, Kurosh Darvish, Nancy Pleshko
Objective Autologous articular cartilage (AC) harvested for repair procedures of high weight bearing (HWB) regions of the femoral condyles is typically obtained from low weight bearing (LWB) regions, in part due to the lack of non-destructive techniques for cartilage composition assessment. Here, we demonstrate that infrared fiber optic spectroscopy can be used to non-destructively evaluate variations in compositional and mechanical properties of AC across LWB and HWB regions. Design AC plugs ( N = 72) were harvested from the patellofemoral groove of juvenile bovine stifle joints, a LWB region, and femoral condyles, a HWB region...
April 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29676169/thirty-minutes-of-running-exercise-decreases-t2-signal-intensity-but-not-thickness-of-the-knee-joint-cartilage-a-3-0-t-magnetic-resonance-imaging-study
#4
Yiğitcan Karanfil, Naila Babayeva, Gürhan Dönmez, H Barış Diren, Muzaffer Eryılmaz, Mahmut Nedim Doral, Feza Korkusuz
Objective Recent studies showed a potential of magnetic resonance imaging (MRI), which can be used as an additional tool for diagnosing cartilage degeneration in the early stage. We designed a cross-sectional study in order to evaluate knee joint cartilage adaptation to running, using 3.0-T MRI equipped with the 3-dimensional turbo spin echo (VISTA = Volume ISotropic Turbo spin echo Acquisition) software. By this thickness (mm) and signal intensity (mean pixel value) can be quantified, which could be closely related to the fluid content of the knee joint cartilage, before and after running...
April 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29671342/human-articular-chondrocytes-retain-their-phenotype-in-sustained-hypoxia-while-normoxia-promotes-their-immunomodulatory-potential
#5
Claire Mennan, John Garcia, Helen McCarthy, Sharon Owen, Jade Perry, Karina Wright, Robin Banerjee, James B Richardson, Sally Roberts
Objective To assess the phenotype of human articular chondrocytes cultured in normoxia (21% O2 ) or continuous hypoxia (2% O2 ). Design Chondrocytes were extracted from patients undergoing total knee replacement ( n = 5) and cultured in ~21% (normoxic chondrocytes, NC) and 2% (hypoxic chondrocytes, HC) oxygen in both monolayer and 3-dimensional (3D) pellet culture and compared with freshly isolated chondrocytes (FC). Cells were assessed by flow cytometry for markers indicative of mesenchymal stromal cells (MSCs), chondrogenic-potency and dedifferentiation...
April 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29667853/evaluation-and-management-of-subchondral-calcium-phosphate-injection-technique-to-treat-bone-marrow-lesion
#6
Diego Costa Astur, Eduardo Vasconcelos de Freitas, Pedro Barreira Cabral, Caio Carvalho Morais, Bruno Silveira Pavei, Camila Cohen Kaleka, Pedro Debieux, Moises Cohen
Purpose This study aimed to compile available data in medical literature about subchondral calcium phosphate injection, comparing results obtained with this technique, as well as indications, complications, and other important factors in treatment of bone marrow lesions. Designs A literature review using PubMed and Medline database in order to identify works with terms "subchondral calcium phosphate injection," " subchondroplasty®," "bone marrow lesion," and "knee." Eight relevant articles were found...
April 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29652173/a-review-of-commercially-available-point-of-care-devices-to-concentrate-bone-marrow-for-the-treatment-of-osteoarthritis-and-focal-cartilage-lesions
#7
Florian Gaul, William D Bugbee, Heinz R Hoenecke, Darryl D D'Lima
Objective Mesenchymal stem cells (MSCs) are a promising cell-based therapy treatment option for several orthopedic indications. Because culture expansion of MSC is time and cost intensive, a bedside concentration of bone marrow (BM) aspirate is used as an alternative. Many commercial systems are available but the available literature and knowledge regarding these systems is limited. We compared different point-of-care devices that concentrate BM (BMC) by focusing on technical features and quality parameters to help surgeons make informed decisions while selecting the appropriate device...
April 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29644876/the-effects-of-well-rounded-exercise-program-on-systemic-biomarkers-related-to-cartilage-metabolism
#8
Masayuki Azukizawa, Hiromu Ito, Yosuke Hamamoto, Takayuki Fujii, Yugo Morita, Akinori Okahata, Takuya Tomizawa, Moritoshi Furu, Kohei Nishitani, Shinichi Kuriyama, Shinichiro Nakamura, Hiroyuki Yoshitomi, Toshiaki Nakatani, Tadao Tsuboyama, Masahide Hamaguchi, Shuichi Matsuda, Tadashi Yasuda
Nonsurgical treatment such as exercise is the preferred method for management of knee osteoarthritis (OA). A combination of aerobic, muscle strengthening, and flexibility exercises is recommended for older adults. However, effects of the exercise intervention on cartilage metabolism remain unclear. This study used biomarkers to investigate the effects of well-rounded exercise program on cartilage metabolism in 42 women (mean age: 59 years). Participants started a weekly supervised exercise program and continued for 12 weeks...
April 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29644875/a-single-intra-articular-injection-of-gel-200-for-treatment-of-symptomatic-osteoarthritis-of-the-knee-is-more-effective-than-phosphate-buffered-saline-at-6-months-a-subgroup-analysis-of-a-multicenter-randomized-controlled-trial
#9
Junko Takamura, Takayuki Seo, Vibeke Strand
Objective Many clinical trials of viscosupplementation have been conducted, although only the Gel-200 (primary) trial included a different patient population. A subgroup analysis of a multicenter, randomized controlled trial comparing the efficacy of single intra-articular injections of Gel-200 with phosphate buffered saline (PBS) was performed to demonstrate its benefit as treatment of osteoarthritis of the knee in a population similar to those of other reported trials of viscosupplementation. Design The subgroup population was defined as patients in the intention-to-treat (ITT) population who met the specified criteria...
April 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29629574/acetabular-delamination-epidemiology-histological-features-and-treatment
#10
Eugenio Jannelli, Antonina Parafioriti, Alberto Acerbi, Alessandro Ivone, Alberto Fioruzzi, Andrea Fontana
Objective The International Cartilage Repair Society classification is the one mainly used to define chondral defects. However, this classification does not include delamination. The objective of the study is to describe the characteristics of this lesion to better explain its classification in the context of chondral lesions of the hip. Design We performed a retrospective analysis of 613 patients who underwent hip arthroscopy. In this group, the incidence, localization, histological characteristics, and association to femoroacetabular impingement as well as to other intraarticular lesions of acetabular delamination (AD) were analyzed...
April 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29629573/a-membranome-centered-approach-defines-novel-biomarkers-for-cellular-subtypes-in-the-intervertebral-disc
#11
Guus G H van den Akker, Lars M T Eijssen, Stephen M Richardson, Lodewijk W van Rhijn, Judith A Hoyland, Tim J M Welting, Jan Willem Voncken
Objective Lack of specific marker-sets prohibits definition and functional distinction of cellular subtypes in the intervertebral disc (IVD), such as those from the annulus fibrosus (AF) and the nucleus pulposus (NP). Design We recently generated immortalized cell lines from human NP and AF tissues; these comprise a set of functionally distinct clonal subtypes. Whole transcriptome analyses were performed of 12 phenotypically distinct clonal cell lines (4× NP-Responder, 4× NP-nonResponder, 2× AF-Sheet forming, and 2× AF-nonSheet forming)...
April 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29582673/effect-of-the-ccl5-releasing-fibrin-gel-for-intervertebral-disc-regeneration
#12
Zhiyu Zhou, Stephan Zeiter, Tanja Schmid, Daisuke Sakai, James C Iatridis, Guangqian Zhou, R Geoff Richards, Mauro Alini, Sibylle Grad, Zhen Li
Objective To explore if chemokine (C-C motif) ligand 5 (CCL5) delivery could recruit annulus fibrosus (AF) cells to the injury sites and facilitate the repair of ruptured AF. Design The effects of CCL5 on bovine AF cells in vitro were tested by transwell assay and quantitative real-time polymerase chain reaction. Fibrin gel containing CCL5 was used to treat annulotomized bovine caudal discs cultured under dynamic loading conditions. After 14 days of loading, the samples were collected for histological examination...
March 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29582672/effect-of-hyperbaric-oxygen-on-proliferation-and-gene-expression-of-human-chondrocytes-an-in-vitro-study
#13
Carolin Melcher, Birte Sievers, Nadine Höchsmann, Frank Düren, Volkmar Jansson, Peter E Müller
Purpose The present study investigated the effects of hyperbaric oxygen (HBO) on human chondrocyte proliferation and gene expression patterns. Methods Chondrocyte cultures were transferred to a HBO chamber and exposed to 100% oxygen for 7 consecutive days. Within groups, pressure was varied between 1 and 2 atm and duration of HBO administration was varied among 60, 90, and 120 minutes. Cell counts were performed using the WST-1 assay at 1, 3, 5, and 7 days after initiation of HBO treatment to obtain data to plot a growth curve...
March 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29582671/a-standardized-method-of-applying-toluidine-blue-metachromatic-staining-for-assessment-of-chondrogenesis
#14
Natasja Leth Bergholt, Helle Lysdahl, Martin Lind, Casper Bindzus Foldager
Objectives Staining with toluidine blue is a well-established procedure for the histological assessment of cartilaginous- and chondrogenic-differentiated tissues. Being a cationic dye, toluidine blue staining visualizes proteoglycans in a tissue because of its high affinity for the sulfate groups in proteoglycans. It is generally accepted that metachromatic staining with toluidine blue represents cartilaginous matrix and that the degree of positive staining corresponds with the amount of proteoglycans. Design Articular cartilage and pellets of chondrocytes or bone marrow stromal cells were analyzed with a standardized staining procedure for toluidine blue...
March 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29577749/proliferation-migration-and-ecm-formation-potential-of-human-annulus-fibrosus-cells-is-independent-of-degeneration-status
#15
Sylvia Hondke, Mario Cabraja, Jan Philipp Krüger, Stefan Stich, Tony Hartwig, Michael Sittinger, Michaela Endres
Objective The objective was to evaluate the proliferating, migratory and extracellular matrix (ECM) forming potential of annulus fibrosus cells derived from early (edAFC) or advanced (adAFC) degenerative tissue and their usability as a possible cell source for regenerative approaches for AF closure. Design EdAFC ( n = 5 Pfirrman score of 2-3) and adAFC (n = 5 Pfirrman score of 4-5) were isolated from tissue of patients undergoing spine stabilizing surgery. Cell migration on stimulation with human serum (HS), platelet-rich plasma (PRP), and transforming growth factor β-3 (TGFB3) was assessed by migration assay and proliferation was assessed on stimulation with HS...
March 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29562767/synovial-fluid-eotaxin-1-levels-may-reflect-disease-progression-in-primary-knee-osteoarthritis-among-elderly-han-chinese-a-cross-sectional-study
#16
Bei Li, Yi-Li Zhang, Shou-Yi Yu
Objective The CC chemokine family member eotaxin-1, also named chemokine C-C motif ligand 11 (CCL11), has been detected in knee osteoarthritis (OA) and could induce breakdown of cartilage matrix. This study was performed to investigate the plasma and synovial fluid eotaxin-1 levels with the disease progression in elderly Han Chinese with primary knee OA. Design A total of 143 elderly primary knee OA patients and 135 healthy controls were enrolled in the study. The Western Ontario and McMaster Universities Arthritis Index (WOMAC) was performed to evaluate the clinical severity...
March 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29553284/quantitative-t2-mapping-shows-increased-degeneration-in-adjacent-intervertebral-discs-following-kyphoplasty
#17
Milena L Pachowsky, Arnd Kleyer, Lisa Wagner, Andreas Langenbach, David Simon, Rolf Janka, Matthias May, Goetz H Welsch
Objective A minimally invasive treatment of osteoporotic and nonosteoporotic thoracic and lumbar spine fractures is cement augmentation (kyphoplasty). Little is known about the impact on adjacent intervertebral discs. A quantitative magnetic resonance imaging (MRI) approach in addition to morphological MRI is desirable to evaluate changes in the intervertebral disc. Our study aims to evaluate the feasibility of T2 mapping for the detection of subtle changes in the intervertebral discs in spines after kyphoplasty...
March 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29271232/an-innovative-laboratory-procedure-to-expand-chondrocytes-with-reduced-dedifferentiation
#18
Yong Mao, Tyler Hoffman, Amy Wu, Joachim Kohn
Objective In vitro expansion of chondrocytes is required for cartilage tissue engineering and clinical cell-based cartilage repair practices. However, the dedifferentiation of chondrocytes during in vitro expansion continues to be a challenge. This study focuses on identifying a cell culture surface to support chondrocyte expansion with reduced dedifferentiation. Design A less adhesive culture surface, non-tissue culture treated surface (NTC), was tested for its suitability for culturing chondrocytes. The cell expansion and the expression of chondrocyte markers were monitored for at least 2 passages on NTC in comparison with conventional tissue culture treated polystyrene surface (TCP)...
April 2018: Cartilage
https://www.readbyqxmd.com/read/29262701/optimization-of-extracellular-matrix-synthesis-and-accumulation-by-human-articular-chondrocytes-in-3-dimensional-construct-with-repetitive-hydrostatic-pressure
#19
Takahiro Ogura, Akihiro Tsuchiya, Tom Minas, Shuichi Mizuno
Objective The effects of hydrostatic pressure (HP) on the matrix synthesis by human articular chondrocytes have been reported elsewhere. In order to optimize the production of extracellular matrix, we aimed to clarify the effects of repetitive HP on metabolic function by human articular chondrocytes. Design The human articular chondrocytes were expanded and embedded within a collagen gel/sponge scaffold. We incubated these constructs with and without HP followed by atmospheric pressure (AP) and repeated the second HP followed by AP over 14 days...
April 2018: Cartilage
https://www.readbyqxmd.com/read/29262700/early-clinically-relevant-improvement-in-quality-of-life-and-clinical-outcomes-1-year-postsurgery-in-patients-with-knee-and-hip-joint-arthroplasties
#20
Audrey Neuprez, Arnaud H Neuprez, Jean-François Kaux, William Kurth, Christophe Daniel, Thierry Thirion, Jean-Pierre Huskin, Philippe Gillet, Olivier Bruyère, Jean-Yves Reginster
Objective To measure and identify the determinants of the outcomes after hip/knee arthroplasty (HA/KA) in patients with osteoarthritis during the first postsurgical year. Design In this prospective observational study, we evaluated the preoperative and postoperative (3, 6, and 12 months) outcomes of 626 patients who underwent HA (346 with median age 65 years, 59% female) or KA (280 with median age 66.5 years, 54% female) between 2008 and 2013. Generic and specific tools were used to measure health-related quality of life (HRQoL) and utility...
April 2018: Cartilage
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