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https://www.readbyqxmd.com/read/28191770/stem-cell-based-tissue-engineered-laryngeal-replacement
#1
Tahera Ansari, Peggy Lange, Aaron Southgate, Karin Greco, Carla Carvalho, Leanne Partington, Anthony Bullock, Sheila MacNeil, Mark W Lowdell, Paul D Sibbons, Martin A Birchall
Patients with laryngeal disorders may have severe morbidity relating to swallowing, vocalization, and respiratory function, for which conventional therapies are suboptimal. A tissue-engineered approach would aim to restore the vocal folds and maintain respiratory function while limiting the extent of scarring in the regenerated tissue. Under Good Laboratory Practice conditions, we decellularized porcine larynges, using detergents and enzymes under negative pressure to produce an acellular scaffold comprising cartilage, muscle, and mucosa...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28169595/tissue-derived-extracellular-matrix-bioscaffolds-emerging-applications-in-cartilage-and-meniscus-repair
#2
Farrah A Monibi, James Lee Cook
Musculoskeletal injuries are a common and significant problem in orthopaedic practice. Given the long-term consequences of unaddressed cartilage and meniscal pathology, a number of treatments have been attempted to stimulate repair or to replace the injured tissue. Despite advances in orthopaedic surgery, effective treatments for cartilage and meniscus injuries remain a common and significant clinical challenge. Tissue engineering is a developing field that aims to regenerate injured tissues with a combination of cells, scaffolds, and signals...
February 7, 2017: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/28138909/colloidal-gels-with-extracellular-matrix-particles-and-growth-factors-for-bone-regeneration-in-critical-size-rat-calvarial-defects
#3
Jakob M Townsend, S Connor Dennis, Jonathan Whitlow, Yi Feng, Jinxi Wang, Brian Andrews, Randolph J Nudo, Michael S Detamore, Cory J Berkland
Colloidal gels encapsulating natural materials and exhibiting paste-like properties for placement are promising for filling complex geometries in craniofacial bone regeneration applications. Colloidal materials have demonstrated modest clinical outcomes as bone substitutes in orthopedic applications, but limited success in craniofacial applications. As such, development of a novel colloidal gel will fill a void in commercially available products for use in craniofacial reconstruction. One likely application for this technology is cranial reconstruction...
January 30, 2017: AAPS Journal
https://www.readbyqxmd.com/read/28005380/hyaluronic-acid-hydroxyapatite-colloidal-gels-combined-with-micronized-native-ecm-as-potential-bone-defect-fillers
#4
S Connor Dennis, Jonathan Whitlow, Michael S Detamore, Sarah L Kieweg, Cory J Berkland
One of the grand challenges in translational regenerative medicine is the surgical placement of biomaterials. For bone regeneration in particular, malleable and injectable colloidal gelsare frequently designed to exhibit self-assembling and shear-response behavior which facilitates biomaterial placement in tissue defects. The current study demonstrated that by combining native extracellular matrix (ECM) microparticles, i.e., demineralized bone matrix (DBM) and decellularized cartilage (DCC), with hyaluronic acid (HA) and hydroxyapatite (HAP) nanoparticles, a viscoelastic colloidal gel consisting exclusively of natural materials was achieved...
December 22, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/27925229/plga-ptmc-cultured-bone-mesenchymal-stem-cell-scaffold-enhances-cartilage-regeneration-in-tissue-engineered-tracheal-transplantation
#5
Bingyang Yan, Zhipei Zhang, Xiaoping Wang, Yunfeng Ni, Yongshi Liu, Tao Liu, Wuping Wang, Hao Xing, Ying Sun, Jian Wang, Xiao-Fei Li
The treatment of long-segment tracheal defect requires the transplantation of effective tracheal substitute, and the tissue-engineered trachea (TET) has been proposed as an ideal tracheal substitute. The major cause of the failure of segmental tracheal defect reconstruction by TET is airway collapse caused by the chondromalacia of TET cartilage. The key to maintain the TET structure is the regeneration of chondrocytes in cartilage, which can secrete plenty of cartilage matrices. To address the problem of the chondromalacia of TET cartilage, this study proposed an improved strategy...
December 7, 2016: Artificial Organs
https://www.readbyqxmd.com/read/27891678/morphomechanics-of-dermis-a-method-for-non-destructive-testing-of-collagenous-tissues
#6
R G Shah, M C Pierce, F H Silver
BACKGROUND: Collagenous tissues store, transmit and dissipate elastic energy during mechanical deformation. In skin, mechanical energy is stored during loading and then is dissipated, which protects skin from mechanical failure. Thus, energy storage (elastic properties) and dissipation (viscous properties) are important characteristics of extracellular matrices (ECMs) that support the cyclic loading of ECMs without tissue failure. METHODS: Uniaxial stress-strain measurements on decellularized human dermis have been made and compared to results of a non-destructive technique involving optical coherence tomography (OCT) combined with vibrational analysis...
November 27, 2016: Skin Research and Technology
https://www.readbyqxmd.com/read/27876676/anatomical-region-dependent-enhancement-of-3-dimensional-chondrogenic-differentiation-of-human-mesenchymal-stem-cells-by-soluble-meniscus-extracellular-matrix
#7
Benjamin B Rothrauff, Kazunori Shimomura, Riccardo Gottardi, Peter G Alexander, Rocky S Tuan
: Extracellular matrix (ECM) derived from decellularized tissues has been found to promote tissue neogenesis, most likely mediated by specific biochemical and physical signaling motifs that promote tissue-specific differentiation of progenitor cells. Decellularized ECM has been suggested to be efficacious for the repair of tissue injuries. However, decellularized meniscus contains a dense collagenous structure, which impedes cell seeding and infiltration and is not readily applicable for meniscus repair...
November 19, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27870078/cartilage-extracellular-matrix-as-a-biomaterial-for-cartilage-regeneration
#8
Emi A Kiyotake, Emily C Beck, Michael S Detamore
The extracellular matrix (ECM) of various tissues possesses the model characteristics that biomaterials for tissue engineering strive to mimic; however, owing to the intricate hierarchical nature of the ECM, it has yet to be fully characterized and synthetically fabricated. Cartilage repair remains a challenge because the intrinsic properties that enable its durability and long-lasting function also impede regeneration. In the last decade, cartilage ECM has emerged as a promising biomaterial for regenerating cartilage, partly because of its potentially chondroinductive nature...
November 2016: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/27863642/tissue-engineered-trachea-a-review
#9
REVIEW
Jia Xian Law, Ling Ling Liau, Bin Saim Aminuddin, Bt Hj Idrus Ruszymah
Tracheal replacement is performed after resection of a portion of the trachea that was impossible to reconnect via direct anastomosis. A tissue-engineered trachea is one of the available options that offer many advantages compared to other types of graft. Fabrication of a functional tissue-engineered trachea for grafting is very challenging, as it is a complex organ with important components, including cartilage, epithelium and vasculature. A number of studies have been reported on the preparation of a graftable trachea...
December 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27859554/evaluation-of-genipin-for-stabilization-of-decellularized-porcine-cartilage
#10
Steven Elder, Amanda Pinheiro, Christian Young, Preston Smith, Emily Wright
We speculate that an acellular osteochondral xenograft may be a good alternative to allografts for repair of focal articular cartilage lesions. In order to make a xenograft resistant to enzymatic degradation and to prevent a chronic immune response it may beneficial to stabilize it through crosslinking. The concept is analogous to treatment of porcine bioprosthetic heart valves with glutaraldehyde. The purpose of this study was to evaluate genipin, a natural crosslinking agent with low cytotoxicity, for stabilization of decellularized cartilage...
November 18, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27846786/systematic-comparison-of-protocols-for-the-preparation-of-human-articular-cartilage-for-use-as-scaffold-material-in-cartilage-tissue-engineering
#11
Cornelia Schneider, Johannes Lehmann, Gerjo J V M van Osch, Florian Hildner, Andreas Teuschl, Xavier Monforte, David Miosga, Patrick Heimel, Eleni Priglinger, Heinz Redl, Suanne Wolbank, Sylvia Nürnberger
Natural extracellular matrix-derived biomaterials from decellularized allogenic tissues are of increasing interest for tissue engineering because their structure and composition provide a complexity that is not achievable with current manufacturing techniques. The prerequisite to bring allogenic tissue from bench to bedside as a functional biomaterial is the full removal of cells while preserving most of its native characteristics such as structure and composition. The exceptionally dense structure of articular cartilage, however, poses a special challenge for decellularization, scaffold preparation, and reseeding...
December 2016: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/27826794/the-challenge-in-using-mesenchymal-stromal-cells-for-recellularization-of-decellularized-cartilage
#12
REVIEW
Zhao Huang, Owen Godkin, Gundula Schulze-Tanzil
Some decellularized musculoskeletal extracellular matrices (ECM)s derived from tissues such as bone, tendon and fibrocartilaginous meniscus have already been clinical use for tissue reconstruction. Repair of articular cartilage with its unique zonal ECM architecture and composition is still an unsolved problem, and the question is whether allogenic or xenogeneic decellularized cartilage ECM could serve as a biomimetic scaffold for this purpose.Hence, this survey outlines the present state of preparing decellularized cartilage ECM-derived scaffolds or composites for reconstruction of different cartilage types and of reseeding it particularly with mesenchymal stromal cells (MSCs)...
November 8, 2016: Stem Cell Reviews
https://www.readbyqxmd.com/read/27688840/acute-delamination-of-commercially-available-decellularized-osteochondral-allograft-plugs-a-report-of-two-cases
#13
Ryan M Degen, Danielle Tetreault, Greg T Mahony, Riley J Williams
Articular cartilage injuries, and corresponding surgical procedures, are occurring with increasing frequency as identified by a review of recent surgical trends. Concerns have grown in recent years regarding the longevity of results following microfracture, with a shift toward cartilage restoration procedures in recent years. This case report describes 2 cases of acute failure following the use of commercially available osteochondral allograft plugs used for the treatment of osteochondral defects of the distal femur...
October 2016: Cartilage
https://www.readbyqxmd.com/read/27673714/in-vivo-cellular-infiltration-and-remodeling-in-a-decellularized-ovine-osteochondral-allograft
#14
Tyler Novak, Kateri Fites Gilliland, Xin Xu, Logan Worke, Aaron Ciesielski, Gert Breur, Corey P Neu
Interest in decellularized tissues has steadily gained as potential solutions for degenerative diseases and traumatic events, replacing sites of missing tissue, and providing the relevant biochemistry and microstructure for tissue ingrowth and regeneration. Osteoarthritis, a progressive and debilitating disease, is often initiated with the formation of a focal defect in the otherwise smooth surface of articular cartilage. Decellularized cartilage tissue, which maintains the structural complexity of the native extracellular matrix, has the potential to provide a clinically relevant solution to focal defects or large tissue damage, possibly even circumventing or complementing current techniques such as microfracture and mosaicplasty...
November 2016: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/27612519/stem-cell-based-tissue-engineered-laryngeal-replacement
#15
Tahera Ansari, Peggy Lange, Aaron Southgate, Karin Greco, Carla Carvalho, Leanne Partington, Anthony Bullock, Sheila MacNeil, Mark W Lowdell, Paul D Sibbons, Martin A Birchall
: : Patients with laryngeal disorders may have severe morbidity relating to swallowing, vocalization, and respiratory function, for which conventional therapies are suboptimal. A tissue-engineered approach would aim to restore the vocal folds and maintain respiratory function while limiting the extent of scarring in the regenerated tissue. Under Good Laboratory Practice conditions, we decellularized porcine larynges, using detergents and enzymes under negative pressure to produce an acellular scaffold comprising cartilage, muscle, and mucosa...
September 9, 2016: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/27554995/the-use-of-a-cartilage-decellularized-matrix-scaffold-for-the-repair-of-osteochondral-defects-the-importance-of-long-term-studies-in-a-large-animal-model
#16
R A Vindas Bolaños, S M Cokelaere, J M Estrada McDermott, K E M Benders, U Gbureck, S G M Plomp, H Weinans, J Groll, P R van Weeren, J Malda
OBJECTIVE: To investigate the effect of decellularized cartilage-derived matrix (CDM) scaffolds, by itself and as a composite scaffold with a calcium phosphate (CaP) base, for the repair of osteochondral defects. It was hypothesized that the chondral defects would heal with fibrocartilaginous tissue and that the composite scaffold would result in better bone formation. METHODS: After an 8-week pilot experiment in a single horse, scaffolds were implanted in eight healthy horses in osteochondral defects on the medial trochlear ridge of the femur...
August 20, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27508528/ascorbate-dependent-impact-on-cell-derived-matrix-in-modulation-of-stiffness-and-rejuvenation-of-infrapatellar-fat-derived-stem-cells-toward-chondrogenesis
#17
Tyler Pizzute, Ying Zhang, Fan He, Ming Pei
Developing an in vitro microenvironment using cell-derived decellularized extracellular matrix (dECM) is a promising approach to efficiently expand adult stem cells for cartilage engineering and regeneration. Ascorbic acid serves as a critical stimulus for cells to synthesize collagens, which constitute the major component of dECM. In this study, we hypothesized that optimization of ascorbate treatment would maximize the rejuvenation effect of dECM on expanded stem cells from human infrapatellar fat pad in both proliferation and chondrogenic differentiation...
2016: Biomedical Materials
https://www.readbyqxmd.com/read/27505971/-a-review-of-research-on-the-application-of-small-intestinal-submucosa-in-repairing-osteoarticular-injury
#18
REVIEW
Qi Guo, Chun-bao Li, Xue-zhen Shen, Feng Qu, Xi Lu, Yu-jie Liu
The ideal treatment and recovery of osteoarticular injury remain to be resolved. Small intestinal submucosa (SIS), a naturally-occurring decellularized extracellular matrix, has been recognized as an ideal scaffold for tissue engineering and widely used in repairing various tissues and organs. Nowadays its application has also been gradually increased in the field of orthopedics. We reviewed laboratorial studies and clinical trails about the application of SIS in bone and joint repair, aiming to evaluate its effects on the repair of bone, cartilage, meniscus, ligament and tendon...
May 2016: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/27391810/effects-of-chondroitinase-abc-mediated-proteoglycan-digestion-on-decellularization-and-recellularization-of-articular-cartilage
#19
Catherine A Bautista, Hee Jun Park, Courtney M Mazur, Roy K Aaron, Bahar Bilgen
Articular cartilage has a limited capacity to heal itself and thus focal defects often result in the development of osteoarthritis. Current cartilage tissue engineering strategies seek to regenerate injured tissue by creating scaffolds that aim to mimic the unique structure and composition of native articular cartilage. Decellularization is a novel strategy that aims to preserve the bioactive factors and 3D biophysical environment of the native extracellular matrix while removing potentially immunogenic factors...
2016: PloS One
https://www.readbyqxmd.com/read/27358376/microsphere-based-scaffolds-encapsulating-chondroitin-sulfate-or-decellularized-cartilage
#20
Vineet Gupta, Kevin M Tenny, Marilyn Barragan, Cory J Berkland, Michael S Detamore
Extracellular matrix materials such as decellularized cartilage (DCC) and chondroitin sulfate (CS) may be attractive chondrogenic materials for cartilage regeneration. The goal of the current study was to investigate the effects of encapsulation of DCC and CS in homogeneous microsphere-based scaffolds, and to test the hypothesis that encapsulation of these extracellular matrix materials would induce chondrogenesis of rat bone marrow stromal cells. Four different types of homogeneous scaffolds were fabricated from microspheres of poly(D,L-lactic-co-glycolic acid): Blank (poly(D,L-lactic-co-glycolic acid) only; negative control), transforming growth factor-β3 encapsulated (positive control), DCC encapsulated, and CS encapsulated...
September 2016: Journal of Biomaterials Applications
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