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https://www.readbyqxmd.com/read/29146943/cryopreservation-of-human-mesenchymal-stem-cells-in-an-allogeneic-bioscaffold-based-on-platelet-rich-plasma-and-synovial-fluid
#1
Haritz Gurruchaga, Laura Saenz Del Burgo, Ane Garate, Diego Delgado, Pello Sanchez, Gorka Orive, Jesús Ciriza, Mikel Sanchez, Jose Luis Pedraz
Transplantation of mesenchymal stem cells (MSCs) has emerged as an alternative strategy to treat knee osteoarthritis. In this context, MSCs derived from synovial fluid could provide higher chondrogenic and cartilage regeneration, presenting synovial fluid as an appropriate MSCs source. An allogeneic and biomimetic bioscaffold composed of Platelet Rich Plasma and synovial fluid that preserve and mimics the natural environment of MSCs isolated from knee has also been developed. We have optimized the cryopreservation of knee-isolated MSCs embedded within the aforementioned biomimetic scaffold, in order to create a reserve of young autologous embedded knee MSCs for future clinical applications...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29145965/increased-cytokine-levels-and-histological-changes-in-cartilage-synovial-cells-and-synovial-fluid-after-malleolar-fractures
#2
Alexandre L Godoy-Santos, Lucas Ranzoni, Walcy R Teodoro, Vera Capelozzi, Pedro Giglio, Tulio Diniz Fernandes, Stefan Rammelt
BACKGROUND: Malleolar fractures are among the most common fractures in the human skeleton with a high risk of later development of post-traumatic osteoarthritis (OA). The acute ankle injury initiates a sequence of events potentially leading to progressive articular surface damage resulting from inflammatory changes in cartilage, synovial tissue and synovial fluid. We hypothesised that in the acute phase of ankle fracture, these changes occur at the same time in the different tissues. METHODS: Specimens of chondral tissue, synovial tissue and synovial fluid were collected from 16 patients with acute articular ankle fracture (study group)...
October 2017: Injury
https://www.readbyqxmd.com/read/29145495/regulatory-mechanism-of-ccn2-production-by-serotonin-5-ht-via-5-ht2a-and-5-ht2b-receptors-in-chondrocytes
#3
Ayaka Hori, Takashi Nishida, Shogo Takashiba, Satoshi Kubota, Masaharu Takigawa
Serotonin (5-hydroxytryptamine: 5-HT) is recognized as a neurotransmitter in the central nerve system and as a regulator of systemic blood pressure in the peripheral tissues. Recently, it was reported that 5-HT2 receptors (5-HT2Rs) were expressed in cartilage tissues lacking both vessels and neurons, suggesting possible novel functions of 5-HT during cartilage development and regeneration. Our previous data indicated that CCN family protein 2/connective tissue growth factor (CCN2/CTGF) plays a central role in cartilage development and regeneration...
2017: PloS One
https://www.readbyqxmd.com/read/29144772/subchondral-bone-degradation-after-microfracture-for-osteochondral-lesions-of-the-talus-an-mri-analysis
#4
Yoshiharu Shimozono, Max Coale, Youichi Yasui, Amanda O'Halloran, Timothy W Deyer, John G Kennedy
BACKGROUND: Microfracture is the most common cartilage-reparative procedure for the treatment of osteochondral lesions of the talus (OLTs). Damage to the subchondral bone (SCB) during microfracture may irreversibly change the joint-loading support of the ankle, leading to reparative fibrocartilage degradation over time. PURPOSE: To investigate the morphological change in the SCB after microfracture for OLT by developing a novel magnetic resonance imaging (MRI) scoring system specifically for evaluating the SCB...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29143404/tool-for-osteoarthritis-risk-prediction-toarp-over-8-years-using-baseline-clinical-data-x-ray-and-mri-data-from-the-osteoarthritis-initiative
#5
Gabby B Joseph, Charles E McCulloch, Michael C Nevitt, Jan Neumann, Alexandra S Gersing, Martin Kretzschmar, Benedikt J Schwaiger, John A Lynch, Ursula Heilmeier, Nancy E Lane, Thomas M Link
BACKGROUND: Osteoarthritis (OA), a multifactorial disease causing joint degeneration, often leads to severe disability. The rising rates of disability highlight the need for implementing preventative measures at early stages of the disease, which would especially benefit subjects at high risk for OA development. PURPOSE: To develop a risk prediction tool for moderate-severe OA (TOARP) over 8 years based on subject characteristics, knee radiographs, and MRI data at baseline using data from the Osteoarthritis Initiative (OAI)...
November 16, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29143065/-complex-joint-reconstruction-and-joint-transplantation-with-the-flocsat-concept-planning-and-surgical-implementation
#6
REVIEW
C Krettek, J-D Clausen, C Neunaber
Cartilage defects in adult patients are so far incurable. Fresh osteochondral allograft (OCA) transplantation is based on the insertion of mature, living, mechanically sound hyaline cartilage into an osteochondral defect where it undergoes osseointegration. Intact hyaline cartilage of OCA does not cause immune reactions in the recipient. Many reports show that small OCA have good osseointegration and show good long-term results. These observations have been incorporated into the development of the fresh large (> 10 cm(2)) osteochondral shell allograft transplantation (FLOCSAT) concept, which is based on the following principles: 1) the thickness of the osseous layer should be kept as thin as possible (target < 6-8 mm) so that the transplant remains stable and fixable...
November 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/29139147/the-development-of-lingual-glands-in-the-domestic-duck-anas-platyrhynchos-f-domestica-3d-reconstruction-lm-and-sem-study
#7
Kinga Skieresz-Szewczyk, Pieter Cornillie, Hanna Jackowiak
The major salivary glands of birds develop by branching or elongation of the epithelial cords. The development of the minor salivary glands in form of the lingual glands has never been described. Among birds, only Anatidae have three types of the lingual glands: rostral, caudo-lateral, and caudo-medial lingual glands. The study aims to characterize the manner and rate of the lingual glands development in the domestic duck and their topographical arrangement relative to the hyoid apparatus. The study reveals that all three types of the lingual glands develop by branching...
November 15, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/29138892/-partial-and-complete-joint-transplantation-with-fresh-osteochondral-allografts-the-flocsat-concept
#8
REVIEW
C Krettek, J-D Clausen, N Bruns, C Neunaber
Cartilage defects in adult patients do not heal well. Fresh osteochondral allograft (OCA) transplantation is based on mature, living, mechanically sound hyaline cartilage attached to a bone interface, which is brought into an osteochondral defect, where it becomes osseointegrated. According to current knowledge, intact hyaline cartilage tissue is immune privileged and does not, in contrast to bone, meniscus or ligaments, cause an immune reaction. The technique has the unique advantage of transplanting viable, mature and mechanically stable hyaline cartilage into the affected area...
November 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/29138855/integrated-bioinformatics-analysis-of-the-osteoarthritis%C3%A2-associated-microrna-expression-signature
#9
Xi Wang, Yujie Ning, Bing Zhou, Lei Yang, Yingting Wang, Xiong Guo
Numerous studies have focused on osteoarthritis (OA) cartilage injuries, with observations of abnormalities in microRNA (miRNA) expression levels. The aim of the present study was to consolidate and assess the results of these studies to identify potential miRNA biomarkers of OA. A comprehensive meta‑analysis of eight independent miRNA expression studies in OA was performed using the robust rank aggregation method (RRA), which contained a total of 82 OA and 39 normal cartilage samples. The targets of meta‑signature miRNA were predicted using TargetScan v6...
November 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29138412/novel-kiaa0753-mutations-extend-the-phenotype-of-skeletal-ciliopathies
#10
A Hammarsjö, Z Wang, R Vaz, F Taylan, M Sedghi, K M Girisha, D Chitayat, K Neethukrishna, P Shannon, R Godoy, K Gowrishankar, A Lindstrand, J Nasiri, M Baktashian, P T Newton, L Guo, W Hofmeister, M Pettersson, A S Chagin, G Nishimura, L Yan, N Matsumoto, A Nordgren, N Miyake, G Grigelioniene, S Ikegawa
The skeletal ciliopathies are a heterogeneous group of disorders with a significant clinical and genetic variability and the main clinical features are thoracic hypoplasia and short tubular bones. To date, 25 genes have been identified in association with skeletal ciliopathies. Mutations in the KIAA0753 gene have recently been associated with Joubert syndrome (JBTS) and orofaciodigital (OFD) syndrome. We report biallelic pathogenic variants in KIAA0753 in four patients with short-rib type skeletal dysplasia...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29137617/surgical-treatment-for-diffused-type-giant-cell-tumor-pigmented-villonodular-synovitis-about-the-ankle-joint
#11
Xingchen Li, Yang Xu, Yuan Zhu, Xiangyang Xu
BACKGROUND: Diffused-type giant cell tumor(Dt-GCT) is a rare, aggressive disorder of the joint synovium, bursa and tendon sheaths. Osseous erosions and subchondral cysts may develop as the result of synovium infiltration in Dt-GCT. We present a retrospective study of a series of patients who are diagnosed with Dt-GCT about the ankle joint, there clinical outcome is evaluated in this study. MATERIAL AND METHOD: Fifteen patients with radiologically and histologically confirmed Dt-GCT about the ankle joint were identified in our foot and ankle department...
November 14, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29137495/development-of-chondrocyte-seeded-electrosprayed-nanoparticles-for-repair-of-articular-cartilage-defects-in-rabbits
#12
Shan-Wei Yang, Kai-Chi Ku, Shu-Ying Chen, Shyh-Ming Kuo, I-Fen Chen, Ting-Yi Wang, Shwu-Jen Chang
Due to limited self-healing capacity in cartilages, there is a rising demand for an innovative therapy that promotes chondrocyte proliferation while maintaining its biofunctionality for transplantation. Chondrocyte transplantation has received notable attention; however, the tendencies of cell de-differentiation and de-activation of biofunctionality have been major hurdles in its development, delaying this therapy from reaching the clinic. We believe it is due to the non-stimulative environment in the injured cartilage, which is unable to provide sustainable physical and biological supports to the newly grafted chondrocytes...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/29135881/maturity-indicators-and-adolescent-idiopathic-scoliosis-evaluation-of-the-sanders-maturity-scale
#13
Kevin M Neal, Eric D Shirley, Gary M Kiebzak
STUDY DESIGN: Retrospective review. OBJECTIVE: To determine the correlation between the Sanders Maturity Scale (SMS) and Risser stages, between both systems and menarche, and whether Risser can be used to predict SMS. SUMMARY OF BACKGROUND DATA: Predicting curve progression is critical to understanding adolescent idiopathic scoliosis and making treatment recommendations. The SMS is a better predictor of the curve acceleration phase of growth than the Risser stage...
November 10, 2017: Spine
https://www.readbyqxmd.com/read/29134405/cell-type-specific-gene-expression-patterns-in-the-knee-cartilage-in-an-osteoarthritis-rat-model
#14
Michal Korostynski, Natalia Malek, Marcin Piechota, Katarzyna Starowicz
Osteoarthritis (OA) is a chronic degenerative disease that leads to joint failure, pain, and disability. Gene regulation is implicated as a driver of the imbalance between the expression of catabolic and anabolic factors that eventually leads to the degeneration of osteoarthritic cartilage. In our model, knee-joint OA was induced in male Wistar rats by intra-articular sodium monoiodoacetate (MIA) injections. Whole-genome microarrays were used to analyse the alterations in gene expression during the time-course of OA development (at 2, 14, and 28 days post-injection) in rat knee joints...
November 13, 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/29131268/correlation-of-insulin-like-growth-factor-1-and-osteoarthritic-cartilage-degradation-a-spontaneous-osteoarthritis-in-guinea-pig
#15
F-Y Wei, J K Lee, L Wei, F Qu, J-Z Zhang
OBJECTIVE: The pathogenesis of osteoarthritis centers on the imbalance between catabolic and anabolic processes in cartilage metabolism. Insulin growth factor 1 (IGF-1) has been shown to have anabolic effects in cartilage in vitro. This study aim to determine whether IGF-1 on cartilage is associated with loss of chondrocyte and extracellular matrix breakdown using the Hartley guinea pig model. MATERIALS AND METHODS: Cartilage from the medial and lateral tibial plateau of 6-month and 12-month old Hartley guinea pigs were used for this study...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29130392/a-novel-hybrid-multichannel-biphasic-calcium-phosphate-granule-based-composite-scaffold-for-cartilage-tissue-regeneration
#16
Albert Jung, Preeti Makkar, Jhaleh Amirian, Byong-Taek Lee
The objective of the present study was to develop a novel hybrid multichannel biphasic calcium phosphate granule (MCG)-based composite system for cartilage regeneration. First, hyaluronic acid-gelatin (HG) hydrogel was coated onto MCG matrix (MCG-HG). Poly(lactic-co-glycolic acid) (PLGA) microspheres was separately prepared and modified with polydopamine subsequent to BMP-7 loading (B). The surface-modified microspheres were finally embedded into MCG-HG scaffold to develop the novel hybrid (MCG-HG-PLGA-PD-B) composite system...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/29129999/expression-of-genes-and-their-polymorphism-influences-the-risk-of-knee-osteoarthritis
#17
Abhishek Mishra, Rajeshwar Nath Srivastava, Sachin Awasthi, Devendra Parmar, Priya Mishra
Introduction: Genetic factors including the level of expression of the fingerprint of genes involved in the development of bones and cartilage such as GDF-5 or ESR-α or CALM-1 are known to be strong determinants of the osteoarthritis (OA) in Caucasian and Oriental populations. Because of high prevalence of OA in Indian population and availability of limited genetic data, we determined whether similar genetic factors are involved in Indians as well. Methods: A case control study was carried out involving 500 patients of knee OA and equal number of healthy controls...
2017: Journal of Nucleic Acids
https://www.readbyqxmd.com/read/29129809/characterization-and-spatiotemporal-expression-analysis-of-nine-bone-morphogenetic-protein-family-genes-during-intermuscular-bone-development-in-blunt-snout-bream
#18
Wei-Zhuo Zhang, Tian Lan, Chun-Hong Nie, Ning-Nan Guan, Ze-Xia Gao
Intermuscular bones (IBs) only exist in the myosepta of lower teleosts and its molecular mechanism remains to be clarified. Bone morphogenetic proteins (BMPs) have been demonstrated to be involved in various physiological processes, including bone and cartilage formation. In this study, we firstly obtained and characterized nine bmp genes for Megalobrama amblycephala, which belongs to Cyprinidae and have a certain amount of IBs. Sequence alignment and phylogenetic analysis both documented that the mature proteins of M...
November 9, 2017: Gene
https://www.readbyqxmd.com/read/29128875/allowing-one-quadrant-of-patellar-lateral-translation-during-medial-patellofemoral-ligament-reconstruction-successfully-limits-maltracking-without-overconstraining-the-patella
#19
John J Elias, Kerwyn C Jones, Molly K Lalonde, Joseph N Gabra, S Cyrus Rezvanifar, Andrew J Cosgarea
PURPOSE: Graft tensioning during medial patellofemoral ligament (MPFL) reconstruction typically allows for lateral patellar translation within the trochlear groove. Computational simulation was performed to relate the allowed patellar translation to patellofemoral kinematics and contact pressures. METHODS: Multibody dynamic simulation models were developed to represent nine knees with patellar instability. Dual limb squatting was simulated representing the pre-operative condition and simulated MPFL reconstruction...
November 11, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29128540/electrospun-thermosensitive-hydrogel-scaffold-for-enhanced-chondrogenesis-of-human-mesenchymal-stem-cells
#20
Alexander R Brunelle, Christopher B Horner, Karen Low, Gerardo Ico, Jin Nam
Hydrogels have shown great potential for cartilage tissue engineering applications due to their capability to encapsulate cells within biomimetic, 3-dimensional (3D) microenvironments. However, the multi-step fabrication process that is necessary to produce cell/scaffold constructs with defined dimensions, limits their off-the-shelf translational usage. In this study, we have developed a hybrid scaffolding system which combines a thermosensitive hydrogel, poly(ethylene glycol)-poly(N-isopropylacrylamide) (PEG-PNIPAAm), with a biodegradable polymer, poly(ε-caprolactone) (PCL), into a composite, electrospun microfibrous structure...
November 8, 2017: Acta Biomaterialia
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