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Cartilage repaire

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https://www.readbyqxmd.com/read/29330730/scaffold-free-tissue-engineering-for-injured-joint-surface-restoration
#1
REVIEW
Kazunori Shimomura, Wataru Ando, Hiromichi Fujie, David A Hart, Hideki Yoshikawa, Norimasa Nakamura
Articular cartilage does not heal spontaneously due to its limited healing capacity, and thus effective treatments for cartilage injuries has remained challenging. Since the first report by Brittberg et al. in 1994, autologous chondrocyte implantation (ACI) has been introduced into the clinic. Recently, as an alternative for chondrocyte-based therapy, mesenchymal stem cell (MSC)-based therapy has received considerable research attention because of the relative ease in handling for tissue harvest, and subsequent cell expansion and differentiation...
January 5, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29327428/an-endochondral-ossification-approach-to-early-stage-bone-repair-use-of-tissue-engineered-hypertrophic-cartilage-constructs-as-primordial-templates-for-weight-bearing-bone-repair
#2
Amos Matsiko, Emmet M Thompson, Cai Lloyd-Griffith, Gráinne M Cunniffe, Tatiana Vinardell, John P Gleeson, Daniel J Kelly, Fergal J O'Brien
Mimicking endochondral ossification to engineer constructs offers a novel solution to overcoming the problems associated with poor vascularisation in bone repair. This can be achieved by harnessing the angiogenic potency of hypertrophic cartilage. In this study, we demonstrate that tissue-engineered hypertrophically-primed cartilage constructs can be developed from collagen-based scaffolds cultured with mesenchymal stem cells. These constructs were subsequently implanted into femoral defects in rats. It was evident that the constructs could support enhanced early-stage healing at 4 weeks of these weight-bearing femoral bone defects compared to untreated defects...
January 11, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29323942/comparison-of-juvenile-allogenous-articular-cartilage-and-bone-marrow-aspirate-concentrate-versus-microfracture-with-and-without-bone-marrow-aspirate-concentrate-in-arthroscopic-treatment-of-talar-osteochondral-lesions
#3
Sydney C Karnovsky, Bridget DeSandis, Amgad M Haleem, Carolyn M Sofka, Martin O'Malley, Mark C Drakos
BACKGROUND: The purpose of this study was to compare the functional and radiographic outcomes of patients who received juvenile allogenic chondrocyte implantation with autologous bone marrow aspirate (JACI-BMAC) for treatment of talar osteochondral lesions with those of patients who underwent microfracture (MF). METHODS: A total of 30 patients who underwent MF and 20 who received DeNovo NT for JACI-BMAC treatment between 2006 and 2014 were included. Additionally, 17 MF patients received supplemental BMAC treatment...
January 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29322878/mechanical-cellular-and-proteomic-properties-of-laryngotracheal-cartilage
#4
Christine M Pauken, Richard Heyes, David G Lott
The larynx sometimes requires repair and reconstruction due to cancer resection, trauma, stenosis, or developmental disruptions. Bioengineering has provided some scaffolding materials and initial attempts at tissue engineering, especially of the trachea, have been made. The critical issues of providing protection, maintaining a patent airway, and controlling swallowing and phonation, require that the regenerated laryngotracheal cartilages must have mechanical and material properties that closely mimic native tissue...
January 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29317369/mesenchymal-stem-cell-derived-extracellular-matrix-enhances-chondrogenic-phenotype-of-and-cartilage-formation-by-encapsulated-chondrocytes-in-vitro-and-in-vivo
#5
Yuanheng Yang, Hang Lin, He Shen, Bing Wang, Guanghua Lei, Rocky S Tuan
Mesenchymal stem cell derived extracellular matrix (MSC-ECM) is a natural biomaterial with robust bioactivity and good biocompatibility, and has been studied as a scaffold for tissue engineering. In this investigation, we tested the applicability of using decellularized human bone marrow derived MSC-ECM (hBMSC-ECM) as a culture substrate for chondrocyte expansion in vitro, as well as a scaffold for chondrocyte-based cartilage repair. hBMSC-ECM deposited by hBMSCs cultured on tissue culture plastic (TCP) was harvested, and then subjected to a decellularization process to remove hBMSCs...
January 6, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29316363/exploiting-advanced-hydrogel-technologies-to-address-key-challenges-in-regenerative-medicine
#6
REVIEW
Daniel A Foyt, Michael D A Norman, Tracy T L Yu, Eileen Gentleman
Regenerative medicine aims to tackle a panoply of challenges from repairing focal damage to articular cartilage to preventing pathological tissue remodeling after myocardial infarction. Hydrogels are water-swollen networks formed from synthetic or naturally derived polymers and are emerging as important tools to address these challenges. Recent advances in hydrogel chemistries are enabling researchers to create hydrogels that can act as 3D ex vivo tissue models, allowing them to explore fundamental questions in cell biology by replicating tissues' dynamic and nonlinear physical properties...
January 9, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29313825/microspheres-containing-decellularized-cartilage-induce-chondrogenesis-i-in-vitro-i-and-remain-functional-after-incorporation-within-a-poly-caprolactone-filament-useful-for-fabricating-a-3d-scaffold
#7
Paulomi Ghosh, Stacey M S Gruber, Chia-Ying Lin, Patrick Whitlock
In this study, articular cartilage was decellularized preserving a majority of the inherent proteins, cytokines, growth factors and sGAGs. The decellularized cartilage matrix (dCM) was then encapsulated in poly(lactic acid) microspheres (MS+dCM) via double emulsion. Blank microspheres without dCM, MS(-), were also produced. The microspheres were spherical in shape and protein encapsulation efficiency within MS+dCM was 63.4%. The sustained release of proteins from MS+dCM was observed over 4 weeks in vitro. Both MS+dCM and MS(-) were cytocompatible...
January 9, 2018: Biofabrication
https://www.readbyqxmd.com/read/29313321/the-matrix-synthesis-and-anti-inflammatory-effect-of-autologous-leukocyte-poor-platelet-rich-plasma-in-human-cartilage-explants
#8
Mario Simental-Mendía, Félix Vilchez-Cavazos, Rubén García-Garza, Jorge Lara-Arias, Roberto Montes-de-Oca-Luna, Salvador Said-Fernández, Herminia G Martínez-Rodríguez
OBJECTIVE: To determine the effects of autologous leukocyte-poor platelet-rich plasma (LP-PRP) on the expression of markers involved in cartilage-extracellular matrix production and inflammation in cartilage explants bearing osteoarthritis. MATERIALS AND METHODS: Cartilage explants and LP-PRP were obtained from 10 patients who underwent total knee arthroplasty. The explants were cultured in spinner flasks for 28 days in the presence of interleukin (IL)-1β and/or LP-PRP...
January 9, 2018: Histology and Histopathology
https://www.readbyqxmd.com/read/29312843/update-on-mesenchymal-stem-cell-therapies-for-cartilage-disorders
#9
EDITORIAL
Nikolaos K Paschos, Mackenzie L Sennett
Cartilage disorders, including focal cartilage lesions, are among the most common clinical problems in orthopedic practice. Left untreated, large focal lesions may result in progression to osteoarthritis, with tremendous impact on the quality of life of affected individuals. Current management strategies have shown only a modest degree of success, while several upcoming interventions signify better outcomes in the future. Among these, stem cell therapies have been suggested as a promising new era for cartilage disorders...
December 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/29305998/effects-of-mechanical-loading-on-cortical-defect-repair-using-a-novel-mechanobiological-model-of-bone-healing
#10
Chao Liu, Robert Carrera, Vittoria Flamini, Lena Kenny, Pamela Cabahug-Zuckerman, Benson M George, Daniel Hunter, Bo Liu, Gurpreet Singh, Philipp Leucht, Kenneth A Mann, Jill A Helms, Alesha B Castillo
Mechanical loading is an important aspect of post-surgical fracture care. The timing of load application relative to the injury event may differentially regulate repair depending on the stage of healing. Here, we use a novel mechanobiological model of cortical defect repair that offers several advantages including its technical simplicity and spatially confined repair program, making effects of both physical and biological interventions more easily assessed. Using this model, we show that daily loading (5N peak load, 2Hz, 60 cycles, 4 consecutive days) during hematoma consolidation and inflammation disrupts the injury site and activates cartilage formation on the periosteal surface adjacent to the defect...
January 3, 2018: Bone
https://www.readbyqxmd.com/read/29305866/novel-and-rapid-osteoporosis-model-established-in-zebrafish-using-high-iron-stress
#11
Wenjuan Zhang, Jingjin Xu, Juhui Qiu, Cencan Xing, Xiumin Li, Bo Leng, Yi Su, Jinmei Lin, Jiaofen Lin, Xuqiao Mei, Yiqun Huang, Anming Meng, Yutian Pan, Yu Xue
Osteoporosis is a global public health concern and, it can result from numerous pathogenic mechanisms, many of which are closely related with age, nutritional disorders, endocrine imbalance, or adverse drug side effects presented by glucocorticoids, heparin, and anti-epileptics. Given its wide range etiologies, it is crucial to establish an animal model of osteoporosis for use in screening potential drugs quickly and effectively. Previous research has reported that an accumulation of elevated iron in the body is an independent risk factor for osteoporosis...
January 3, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29305041/arthroscopic-treatment-of-osteochondral-lesions-of-the-talus-using-juvenile-articular-cartilage-allograft-and-autologous-bone-marrow-aspirate-concentration
#12
Bridget A DeSandis, Amgad M Haleem, Carolyn M Sofka, Martin J O'Malley, Mark C Drakos
Juvenile allogenic chondrocyte implantation (JACI; DeNovo NT Natural Tissue Graft®; Zimmer, Warsaw, IN) with autologous bone marrow aspirate concentrate (BMAC) is a relatively new all-arthroscopic procedure for treating critical-size osteochondral lesions (OCLs) of the talus. Few studies have investigated the clinical and radiographic outcomes of this procedure. We collected the clinical and radiographic outcomes of patients who had undergone JACI-BMAC for talar OCLs to assess treatment efficacy and cartilage repair tissue quality using magnetic resonance imaging (MRI)...
January 2, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29300225/articular-cartilage-injury-pathways-and-treatment-options
#13
Timothy M Simon, Douglas W Jackson
Articular cartilage injury and degeneration is a frequent occurrence in synovial joints. Treatment of these articular cartilage lesions are a challenge because this tissue is incapable of quality repair and/or regeneration to its native state. Nonoperative treatments endeavor to control symptoms, and include anti-inflammatory medication, viscosupplementation, bracing, orthotics, and activity modification. Techniques to stimulate the intrinsic repair (fibrocartilage) process include drilling, abrasion, and microfracture of the subchondral bone...
March 2018: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/29295547/3d-printed-structures-filled-with-carbon-fibers-and-functionalized-with-mesenchymal-stem-cell-conditioned-media-as-in-vitro-cell-niches-for-promoting-chondrogenesis
#14
Josefa Predestinación García-Ruíz, Andrés Díaz Lantada
In this study, we present a novel approach towards the straightforward, rapid, and low-cost development of biomimetic composite scaffolds for tissue engineering strategies. The system is based on the additive manufacture of a computer-designed lattice structure or framework, into which carbon fibers are subsequently knitted or incorporated. The 3D-printed lattice structure acts as support and the knitted carbon fibers perform as driving elements for promoting cell colonization of the three-dimensional construct...
December 24, 2017: Materials
https://www.readbyqxmd.com/read/29287161/evaluation-of-equine-synovial-derived-extracellular-matrix-scaffolds-seeded-with-equine-synovial-derived-mesenchymal-stem-cells
#15
Nathalie A Reisbig, Hayam A Hussein, Erin Pinnell, Alicia L Bertone
OBJECTIVE To create a bioactive synovium scaffold by infusing decellularized synovial-derived extracellular matrix (synECM) with synovial-derived mesenchymal stem cells (synMSCs). SAMPLE Synovium from the femoropatellar and medial femorotibial joints of equine cadavers. PROCEDURES The synMSCs were cultured in monolayer and not treated or cotransduced to enhance expression of green fluorescent protein (GFP) and human bone morphogenetic protein (BMP)-2. The synECM was decellularized with 0.1% peracetic acid and then seeded with synMSCs (0...
January 2018: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/29285587/the-percutaneous-pie-crusting-medial-release-during-arthroscopic-procedures-of-the-medial-meniscus-does-neither-affect-valgus-laxity-nor-clinical-outcome
#16
Sang-Woo Jeon, Min Jung, Yong-Min Chun, Su-Keon Lee, Woo Seok Jung, Chong Hyuk Choi, Sung-Jae Kim, Sung-Hwan Kim
PURPOSE: To analyze the effect of percutaneous pie-crusting medial release on valgus laxity before and after surgery and on clinical outcomes. METHODS: Eight-hundred fourteen consecutive patients who underwent an arthroscopic procedure for the medial compartment of the knee were evaluated retrospectively. Sex, age, type of operation (meniscectomy, meniscal repair, and posterior root repair), type of accompanying surgery (none, cartilage procedure, ligament procedure and osteotomy) were documented...
December 28, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29284174/bilayer-matrix-autologous-chondrocyte-implantation-without-bone-graft-for-knee-osteochondral-lesion-less-than-8%C3%A2-mm-deep
#17
Murat Bozkurt, Cetin Isik, Safa Gursoy, Mustafa Akkaya, Oktay Algin, Metin Dogan
This article investigates the clinical and radiological results of bilayer matrix autologous chondrocyte implantation (MACI) membrane technique in the treatment of shallow osteochondral defects. An analysis was made of eight patients who were operated on using the bilayer MACI (Genzyme Biosurgery, Cambridge, MA) technique (mean age: 20.2 years, mean defect size: 3.8 cm2, mean defect depth: 6.2 ± 0.9 mm, and mean follow-up time: 22.1 ± 5.3 [14-26.1] months). According to the defect, the first membrane was secured to the base of the defect with the cells facing up, and the second membrane was implanted on top of the first membrane with the cells facing down using fibrin glue...
December 28, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29281950/kartogenin-enhanced-chondrogenesis-in-co-cultures-of-chondrocytes-and-bone-mesenchymal-stem-cells
#18
Chun Liu, Tao Li, Zhijian Yang, Deshuai Liu, Yun Li, Zhiyou Zhou, Qiqing Zhang
Articular cartilage has poor capability of regeneration due to the avascular surrounding and low metabolic activity. Kartogenin (KGN), an emerging nonprotein heterocyclic compound, was screened to stimulate chondrogenic differentiation of bone mesenchymal stem cells (BMSCs). Co-culturing BMSCs and chondrocytes was reported to overcome the shortcomings of forming fibroblastic and hypertrophic cartilages. In this study, KGN was incorporated into the Col-Tgel hydrogel to form a Gel/Cell/KGN complex which fabricated an appropriate microenvironment for effective cartilage regeneration of BMSCs and/or chondrocyte...
December 27, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29281796/morphologic-properties-of-cartilage-lesions-in-the-knee-arthroscopically-prepared-by-the-standard-curette-technique-are-inferior-to-lesions-prepared-by-specialized-chondrectomy-instruments
#19
Adrian Blasiak, Graeme P Whyte, Adrian Matlak, Roman Brzóska, Boguslaw Sadlik
BACKGROUND: Cartilage lesion preparation is an important component to cartilage repair procedures, given the effect of prepared lesion morphology on the formation of durable and well-integrated repair tissue. PURPOSE: To compare the quality of arthroscopic cartilage lesion debridement performed by (1) the standard curette (SC) technique and (2) specialized chondrectomy (CM) instruments, to provide technical guidance for optimization of cartilage lesion preparation in the setting of arthroscopic cartilage repair...
December 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29280492/unexpected-prominent-tension-pneumosella-five-years-after-endoscopic-endonasal-transsphenoidal-surgery
#20
Tatsuma Matsuda, Kentaro Horiguchi, Yoshinori Higuchi, Toyoyuki Hanazawa, Yoshitaka Okamoto, Yasuo Iwadate
Tension pneumosella (TP) is a rare entity reported as the invagination of the sphenoid sinus mucosa into the skull base after endonasal transsphenoidal surgery. Few studies have reported on TP, and in these studies, invagination is confined to either the intrasellar or suprasellar area. We encountered a case of unexpected prominent TP toward the intracranial space 5 years after endoscopic endonasal transsphenoidal surgery (EETS) for a nonfunctioning pituitary adenoma. In addition, we present a hypothesis of the underlying mechanism by a pressure gradient change between the extracranial and intracranial space in TP formation...
December 27, 2017: Laryngoscope
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