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Articular cartilage

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https://www.readbyqxmd.com/read/28729762/combination-of-bone-marrow-mesenchymal-stem-cells-and-cartilage-fragments-contribute-to-enhanced-repair-of-osteochondral-defects
#1
Mohammed Abbas
Cartilage tissue engineering using stem cells and biomaterials is considered a promising approach despite poor outcomes. We hypothesise that articular cartilage fragments provides native environmental cues to enhance stem cell differentiation. As such we evaluated the chondrogenic differentiation and repair of critical size defect in a human explant osteochondral model (OD) using bone marrow derived mesenchymal stem cells (BM-MSCs) and homogenised cartilage. BM-MSCs were established from the bone-marrow plugs of patients undergoing total knee arthroplasty and characterized...
2017: Bioinformation
https://www.readbyqxmd.com/read/28729605/evaluating-the-effects-of-material-properties-of-artificial-meniscal-implant-in-the-human-knee-joint-using-finite-element-analysis
#2
Duraisamy Shriram, Gideon Praveen Kumar, Fangsen Cui, Yee Han Dave Lee, Karupppasamy Subburaj
Artificial meniscal implants may replace severely injured meniscus and restore the normal functionality of the knee joint. Implant material stiffness and shape influence the longevity of implantations. This study, using 3D finite element analysis, aimed to evaluate the effects of material stiffness variations of anatomically shaped artificial meniscal implant in the knee joint. Finite element simulations were conducted on five different cases including intact knee, medial meniscectomized knee, and the knee joint with the meniscal implant with three distinct material stiffness...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28727417/oxygen-dependent-lipid-profiles-of-3d-cultured-human-chondrocytes-revealed-by-maldi-msi
#3
Brenda Bakker, Gert B Eijkel, Ron M A Heeren, Marcel Karperien, Janine N Post, Berta Cillero Pastor
Articular cartilage is exposed to a gradient of oxygen levels ranging from 5% at the surface to 1% in the deepest layers. While most cartilage research is performed in supraphysiological oxygen levels (19-21%), culturing chondrocytes under hypoxic oxygen levels (≤ 8%) promotes the chondrogenic phenotype. Exposure of cells to various oxygen levels alters their lipid metabolism, but detailed studies examining how hypoxia affects lipid metabolism in chondrocytes are lacking. To better understand the chondrocyte's behavior in response to oxygen we cultured 3D pellets of human primary chondrocytes in normoxia (20% oxygen) and hypoxia (2...
July 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28724980/handheld-co-axial-bioprinting-application-to-in-situ-surgical-cartilage-repair
#4
Serena Duchi, Carmine Onofrillo, Cathal D O'Connell, Romane Blanchard, Cheryl Augustine, Anita F Quigley, Robert M I Kapsa, Peter Pivonka, Gordon Wallace, Claudia Di Bella, Peter F M Choong
Three-dimensional (3D) bioprinting is driving major innovations in the area of cartilage tissue engineering. Extrusion-based 3D bioprinting necessitates a phase change from a liquid bioink to a semi-solid crosslinked network achieved by a photo-initiated free radical polymerization reaction that is known to be cytotoxic. Therefore, the choice of the photocuring conditions has to be carefully addressed to generate a structure stiff enough to withstand the forces phisiologically applied on articular cartilage, while ensuring adequate cell survival for functional chondral repair...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724439/genetic-deficiency-of-wnt5a-diminishes-disease-severity-in-a-murine-model-of-rheumatoid-arthritis
#5
Susan MacLauchlan, Maria A Zuriaga, José J Fuster, Carla M Cuda, Jennifer Jonason, Fernanda Behzadi, Jennifer Parker Duffen, G Kenneth Haines, Tamar Aprahamian, Harris Perlman, Kenneth Walsh
BACKGROUND: Rheumatoid arthritis (RA) is a common autoimmune disease characterized by chronic inflammation of the joints, leading to bone erosion and joint dysfunction. Despite the recent successes of disease-modifying anti-rheumatic drugs (DMARDs), there is still clinical need for understanding the development and molecular etiology of RA. Wnts are developmental morphogens whose roles in adult pathology are poorly characterized. Wnt5a is a member of the non-canonical family of Wnts that modulates a wide range of cell processes, including differentiation, migration, and inflammation...
July 19, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28724217/chondroprotective-and-anti-nociceptive-effects-of-caffeoylquinic-acid-in-osteoarthritis-by-downregulating-catabolic-activity-and-oxidative-damage-in-chondrocytes
#6
Luping Liu, Yongmei Li
We evaluated the chondroprotective and anti-nociceptive effects of caffeoylquinic acid (CA) in a rat osteoarthritis (OA) model. Monosodium iodoacetate was injected intra-articularly in the rats to produce OA. The rats were divided into three groups: control, OA group, which received vehicle, and the CA-treated group, which received CA (50mg/kg, p.o.) for 14days. At the end of the protocol, pain was estimated by observing the paw withdrawal threshold and latency. Degeneration of cartilage was assessed through histomorphological and microscopical examination of joints...
July 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28722504/role-of-tenascin-c-in-articular-cartilage
#7
Masahiro Hasegawa, Toshimichi Yoshida, Akihiro Sudo
Tenascin-C (TN-C) is a glycoprotein component of the extracellular matrix (ECM). TN-C consists of four distinct domains, including the tenascin assembly domain, epidermal growth factor-like repeats, fibronectin type III-like repeats, and the fibrinogen-like globe (FBG) domain. This review summarizes the role of TN-C in articular cartilage. Expression of TN-C is associated with the development of articular cartilage but markedly decreases during maturation of chondrocytes and disappears almost completely in adult articular cartilage...
July 19, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/28721819/the-application-of-scaffold-materials-in-cartilage-tissue-engineering
#8
Na Fu, Tengzhe Dong, Ai Meng, Zhaosong Meng, Bofeng Zhu, Yunfeng Lin
The management of chondral defects has been a challenge for a long time because of the poor self-healing capacity of articular cartilage. Many approaches ranging from symptomatic treatment to structural cartilage regeneration are not that successful with very limited satisfactory results. Chondral defects caused by tumor, trauma, infection, congenital malformations are very common in clinical trials. It seriously affects the patient's physical function and quality of life. Cartilage tissue engineering, which involves novel natural scaffolds, has emerged as a promising strategy for cartilage regeneration and repair...
July 18, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28721683/mesenchymal-stem-progenitor-cells-derived-from-articular-cartilage-synovial-membrane-and-synovial-fluid-for-cartilage-regeneration-current-status-and-future-perspectives
#9
REVIEW
Yi-Zhou Huang, Hui-Qi Xie, Antonietta Silini, Ornella Parolini, Yi Zhang, Li Deng, Yong-Can Huang
Large articular cartilage defects remain an immense challenge in the field of regenerative medicine because of their poor intrinsic repair capacity. Currently, the available medical interventions can relieve clinical symptoms to some extent, but fail to repair the cartilaginous injuries with authentic hyaline cartilage. There has been a surge of interest in developing cell-based therapies, focused particularly on the use of mesenchymal stem/progenitor cells with or without scaffolds. Mesenchymal stem/progenitor cells are promising graft cells for tissue regeneration, but the most suitable source of cells for cartilage repair remains controversial...
July 18, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28721491/erratum-to-development-of-an-electromechanical-grade-to-assess-human-knee-articular-cartilage-quality
#10
Sotcheadt Sim, Insaf Hadjab, Martin Garon, Eric Quenneville, Patrick Lavigne, Michael D Buschmann
No abstract text is available yet for this article.
July 18, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28719561/arterial-topographic-anatomy-near-the-femoral-head-neck-perforation-with-surgical-relevance
#11
Paulo Rego, Vasco Mascarenhas, Diego Collado, Ana Coelho, Luis Barbosa, Reinhold Ganz
BACKGROUND: Knowledge of the vascular supply of the femoral head is crucial for hip-preserving surgical procedures. The critical area for reshaping cam deformity is at the retinacular vessel penetration, an area with ill-defined topographic anatomy. We performed a cadaver study of the extension of the lateral retinaculum near the head-neck junction, distribution of the arterial vascular foramina, and initial intracapital course of these vessels. METHODS: In 16 fresh proximal parts of the femur without head-neck deformities, the deep branch of the medial femoral circumflex artery was injected with gadolinium for magnetic resonance imaging (MRI) sequences to identify arterial structures...
July 19, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28719231/biologic-injections-for-osteoarthritis-and-articular-cartilage-damage-can-we-modify-disease
#12
Weilong J Shi, Fotios P Tjoumakaris, Mayan Lendner, Kevin B Freedman
OBJECTIVE: The purpose of the present investigation is to conduct a systematic review of the literature to review the clinical results of platelet rich plasma (PRP) and mesenchymal stem cell treatments (MSC) (biologics) for articular cartilage lesions and osteoarthritis of the knee. METHODS: A search of the PubMed, EMBASE, and Cochrane databases was performed to identify studies involving biologic therapy for osteoarthritis or osteochondral defects. Only Level I-III clinical trials with at least 3-month follow-up were included...
July 18, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28717928/routine-clinical-knee-mr-reports-comparison-of-diagnostic-performance-at-1-5%C3%A2-t-and-3-0%C3%A2-t-for-assessment-of-the-articular-cartilage
#13
Jacob C Mandell, Jeffrey A Rhodes, Nehal Shah, Glenn C Gaviola, Andreas H Gomoll, Stacy E Smith
OBJECTIVE: Accurate assessment of knee articular cartilage is clinically important. Although 3.0 Tesla (T) MRI is reported to offer improved diagnostic performance, literature regarding the clinical impact of MRI field strength is lacking. The purpose of this study is to compare the diagnostic performance of clinical MRI reports for assessment of cartilage at 1.5 and 3.0 T in comparison to arthroscopy. MATERIALS AND METHODS: This IRB-approved retrospective study consisted of 300 consecutive knees in 297 patients who had routine clinical MRI and arthroscopy...
July 17, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28716756/cartilage-specific-deletion-of-alk5-gene-results-in-a-progressive-osteoarthritis-like-phenotype-in-mice
#14
Quan Wang, Qiaoyan Tan, Wei Xu, Huabing Qi, Di Chen, Siru Zhou, Zhenhong Ni, Liang Kuang, Jingyuan Guo, Junlan Huang, Xianxing Wang, Zuqiang Wang, Nan Su, Liang Chen, Bo Chen, Wanling Jiang, Yu Gao, Hangang Chen, Xiaolan Du, Yangli Xie, Lin Chen
OBJECTIVE: Previous studies have shown that Transforming growth factor-β (TGF-β)/TGFβRII-Smad3 signaling is involved in articular cartilage homeostasis. However, the role of TGF-β/ALK5 signaling in articular cartilage homeostasis has not been fully defined. In this study, a combination of in vitro and in vivo approaches was used to elucidate the role of ALK5 signaling in articular cartilage homeostasis and the development of osteoarthritis (OA). DESIGN: Mice with inducible cartilage-specific deletion of Alk5 were generated to assess the role of ALK5 in OA development...
July 14, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28715962/in-vitro-analysis-of-the-differentiation-capacity-of-postmortally-isolated-human-chondrocytes-influenced-by-different-growth-factors-and-oxygen-levels
#15
Anika Jonitz-Heincke, Annett Klinder, Diana Boy, Achim Salamon, Doris Hansmann, Juliane Pasold, Andreas Buettner, Rainer Bader
Objective In the present in vitro study, we analyzed the chondrogenic differentiation capacity of human chondrocytes postmortally isolated from unaffected knee cartilage by the addition of transforming growth factor-β1 (TGF-β1) and/or insulin-like growth factor-1 (IGF-1) and different oxygen levels. Design After 14 and 35 days, DNA concentrations and protein contents of Col1, Col2, aggrecan as well as glycosaminoglycans (GAGs) of chondrocytes cultivated as pellet cultures were analyzed. Additionally, expression rates of mesenchymal stem cell (MSC)-associated differentiation markers were assessed in monolayer cultures...
July 1, 2017: Cartilage
https://www.readbyqxmd.com/read/28714568/exposure-to-reversine-affects-the-chondrocyte-morphology-and-phenotype-in-vitro
#16
S Gasparini, F Villa, L Molfetta, E Repaci, P Castagnola, R Quarto, P Giannoni
Articular chondrocytes derived from osteoarthritic tissues (OA-HAC) show a severely reduced chondrogenic commitment. This impairment undermines their use for tissue-engineered cartilage repair, which relies on cell proliferation and growth to meet the therapeutic needs but also on efficient cell plasticity to recover the chondrogenic phenotype. Reversine (Rev), a 2,6-disubstituted purine inhibitor of spindle-assembly checkpoints, was described to convert differentiated mesenchymal cells to their undifferentiated precursors...
July 17, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28713920/low%C3%A2-dose-halofuginone-inhibits-the-synthesis-of-type-i-collagen-without-influencing-type-ii-collagen-in-the-extracellular-matrix-of-chondrocytes
#17
Zeng Li, Hao Fei, Zhen Wang, Tianyi Zhu
Full‑thickness and large area defects of articular cartilage are unable to completely repair themselves and require surgical intervention, including microfracture, autologous or allogeneic osteochondral grafts, and autologous chondrocyte implantation. A large proportion of regenerative cartilage exists as fibrocartilage, which is unable to withstand impacts in the same way as native hyaline cartilage, owing to excess synthesis of type I collagen in the matrix. The present study demonstrated that low‑dose halofuginone (HF), a plant alkaloid isolated from Dichroa febrifuga, may inhibit the synthesis of type I collagen without influencing type II collagen in the extracellular matrix of chondrocytes...
July 15, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28713485/micrornas-and-autophagy-fine-players-in-the-control-of-chondrocyte-homeostatic-activities-in-osteoarthritis
#18
REVIEW
Stefania D'Adamo, Silvia Cetrullo, Manuela Minguzzi, Ylenia Silvestri, Rosa Maria Borzì, Flavio Flamigni
Osteoarthritis (OA) is a debilitating degenerative disease of the articular cartilage with a multifactorial etiology. Aging, the main risk factor for OA development, is associated with a systemic oxidative and inflammatory phenotype. Autophagy is a central housekeeping system that plays an antiaging role by supporting the clearance of senescence-associated alterations of macromolecules and organelles. Autophagy deficiency has been related to OA pathogenesis because of the accumulation of cellular defects in chondrocytes...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28710893/fracture-of-the-medial-intercondylar-eminence-of-the-tibia-in-horses-treated-by-arthroscopic-fragment-removal-21-horses
#19
L M Rubio-Martínez, R Redding, B Bladon, H Wilderjans, R J Payne, C Tessier, O Geffroy, R Parker, C Bell, F A Collingwood
BACKGROUND: Fractures of the medial intercondylar eminence of the tibia (MICET) are scarcely reported in horses. OBJECTIVES: To report the clinical and diagnostic findings, surgical treatment and outcome in a series of horses presented with MICET fracture and treated with arthroscopic fragment removal. STUDY DESIGN: Multi-centre retrospective case series. METHODS: Case records of horses diagnosed with MICET fractures that had undergone surgical treatment were reviewed...
July 15, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28710591/effect-of-dietary-phytase-supplementation-on-bone-and-hyaline-cartilage-development-of-broilers-fed-with-organically-complexed-copper-in-a-cu-deficient-diet
#20
Siemowit Muszyński, Ewa Tomaszewska, Małgorzata Kwiecień, Piotr Dobrowolski, Agnieszka Tomczyk
Tibial mechanical, chemical, and histomorphometrical traits were investigated for growing male Ross 308 broiler chickens fed diets that had copper (Cu) from organic source at a lowered level of 25% of the daily requirement (4 mg kg(-1) of a premix) with or without phytase. Dietary treatments were control non-copper, non-phytase group (0 Suppl); 4 mg kg(-1) Cu non-phytase group (25%Cu); and 4 mg kg(-1) Cu + 500 FTU kg(-1) phytase group (25%Cu + phyt). The results show that birds fed with the addition of phytase exhibited improved weight gain and final body weight and had increased serum IGF-1 and osteocalcin concentrations...
July 15, 2017: Biological Trace Element Research
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