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Chondrocyte transplant

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https://www.readbyqxmd.com/read/29228404/chondrocyte-viability-at-time-of-transplantation-for-osteochondral-allografts-preserved-by-the-missouri-osteochondral-preservation-system-versus-standard-tissue-bank-protocol
#1
Aaron M Stoker, James P Stannard, James L Cook
No abstract text is available yet for this article.
December 11, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29218684/feasibility-of-arthroscopic-autologous-chondrocyte-implantation-in-the-hip-using-an-injectable-hydrogel
#2
Steffen Thier, Florian Baumann, Christel Weiss, Stefan Fickert
INTRODUCTION: In the long term the treatment of articular cartilage defects of the hip has the most direct impact on the postoperative outcome and should diminish degenerative changes caused by different pathologies. The purpose of this prospective feasibility study is to describe technical aspects of arthroscopic, injectable autologous chondrocyte implantation in the hip and to report the short-term outcome. METHODS: Full-thickness cartilage defects of 13 patients were treated arthroscopically with an injectable autologous chondrocyte transplantation product (Novocart Inject, Tetec) in a 2-step surgical procedure...
December 8, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29198358/editorial-commentary-the-acellular-osteochondral-allograft-the-emperor-has-new-clothes
#3
EDITORIAL
Bert R Mandelbaum, Jorge Chahla
For larger lesions (>2.5-cm2), clinical evidence and practice have shown that fresh osteochondral allograft have good durability, with 88% return to sport and greater than 75% 10-year survival rates for treatment of large femoral condyle lesions. That said, the use of fresh osteochondral allografts in clinical practice is limited by the availability of acceptable donor tissues for eligible patients in a timely fashion. Significant diminution of chondrocyte viability and density occurs during the preservation and storage period...
December 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29190645/cd105-mesenchymal-stem-cells-migrate-into-osteoarthritis-joint-an-animal-model
#4
Pablo Fernandez-Pernas, Iván Rodríguez-Lesende, Alexandre de la Fuente, Jesús Mateos, Isaac Fuentes, Javier De Toro, Fco J Blanco, M C Arufe
Mesenchymal stem cells are being the focus of connective tissue technology and regenerative medicine, presenting a good choice cell source for improving old and well recognized techniques of cartilage defect repair. For instance, the autologous chondrocyte transplantation using new concepts of regenerative medicine. The present study investigated the risk of xenogenicity of human synovial membrane-derived MSCs, injected into the monkeys using intravenous and intra-articular administration. The animal models used were adult monkeys Rhesus which had been injured into the left knee to create an Osteoarthritis (OA) animal model...
2017: PloS One
https://www.readbyqxmd.com/read/29177132/autologous-cell-seeding-in-tracheal-tissue-engineering
#5
REVIEW
Elizabeth F Maughan, Robert E Hynds, Toby J Proctor, Sam M Janes, Martin Elliott, Martin A Birchall, Mark W Lowdell, Paolo De Coppi
Purpose of Review: There is no consensus on the best technology to be employed for tracheal replacement. One particularly promising approach is based upon tissue engineering and involves applying autologous cells to transplantable scaffolds. Here, we present the reported pre-clinical and clinical data exploring the various options for achieving such seeding. Recent Findings: Various cell combinations, delivery strategies, and outcome measures are described. Mesenchymal stem cells (MSCs) are the most widely employed cell type in tracheal bioengineering...
2017: Current Stem Cell Reports
https://www.readbyqxmd.com/read/29160845/vascular-endothelial-growth-factor-sequestration-enhances-in-vivo-cartilage-formation
#6
Carolina M Medeiros Da Cunha, Valeria Perugini, Petra Bernegger, Matteo Centola, Andrea Barbero, Anna L Guildford, Matteo Santin, Andrea Banfi, Ivan Martin, Anna Marsano
Autologous chondrocyte transplantation for cartilage repair still has unsatisfactory clinical outcomes because of inter-donor variability and poor cartilage quality formation. Re-differentiation of monolayer-expanded human chondrocytes is not easy in the absence of potent morphogens. The Vascular Endothelial Growth Factor (VEGF) plays a master role in angiogenesis and in negatively regulating cartilage growth by stimulating vascular invasion and ossification. Therefore, we hypothesized that its sole microenvironmental blockade by either VEGF sequestration by soluble VEGF receptor-2 (Flk-1) or by antiangiogenic hyperbranched peptides could improve chondrogenesis of expanded human nasal chondrocytes (NC) freshly seeded on collagen scaffolds...
November 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29143065/-complex-joint-reconstruction-and-joint-transplantation-with-the-flocsat-concept-planning-and-surgical-implementation
#7
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/29137495/development-of-chondrocyte-seeded-electrosprayed-nanoparticles-for-repair-of-articular-cartilage-defects-in-rabbits
#8
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/29131029/rapid-induction-of-osteogenic-markers-in-mesenchymal-stem-cells-by-adipose-derived-stromal-vascular-fraction-cells
#9
Jung-Won Choi, Sunhye Shin, Chang Youn Lee, Jiyun Lee, Hyang-Hee Seo, Soyeon Lim, Seahyoung Lee, Il-Kwon Kim, Hoon-Bum Lee, Sang Woo Kim, Ki-Chul Hwang
BACKGROUND/AIMS: Stromal vascular fraction (SVF) cells are a mixed cell population, and their regenerative capacity has been validated in various therapeutic models. The purpose of this study was to investigate the regenerative mechanisms utilized by implanted SVF cells. Using an in vitro co-culture system, we sought to determine whether SVF implantation into impaired tissue affects endogenous mesenchymal stem cell (MSC) differentiation; MSCs can differentiate into a variety of cell types, and they have a strong regenerative capacity despite their low numbers in impaired tissue...
November 3, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29114638/how-to-manage-a-failed-cartilage-repair-a-systematic-literature-review
#10
REVIEW
Donato Rosa, Sigismondo Luca Di Donato, Giovanni Balato, Alessio D'Addona, Francesco Smeraglia, Gaetano Correra, Gianni Di Vico
Purpose  The aims of this paper are to report the rate and risk factors for the failure of the most common cartilage repair technique, and analyze the most important factors that could influence the choice of a specific surgical treatment to revise a failed cartilage repair. Methods  A review of the literature was performed focusing on failed cartilage repair and related treatments. Two of the authors independently screened articles. Conflicts about the inclusion of a paper was resolved by further evaluation by the senior author...
June 2017: Joints
https://www.readbyqxmd.com/read/29103840/the-influence-of-full-thickness-chondral-defects-on-outcomes-following-meniscal-allograft-transplantation-a-comparative-study
#11
Bryan M Saltzman, Maximilian A Meyer, Timothy S Leroux, Matthew E Gilelis, Margot Debot, Adam B Yanke, Brian J Cole
PURPOSE: To compare a series of patients who underwent meniscus allograft transplantation (MAT) with full-thickness chondral defects (FTD) with those with no chondral defect (ND) with regard to the following: change in patient-reported outcomes (PROs) from baseline to 2-year follow-up and baseline to the final follow-up (including comparisons to minimal clinically important differences), complications and complication rates, reoperations and reoperation rates/timing, and failures and time to failure (revision MAT or conversion to total knee arthroplasty)...
November 2, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29094011/scaffolds-based-therapy-for-osteochondral-lesions-of-the-talus-a-systematic-review
#12
Yoshiharu Shimozono, Youichi Yasui, Andrew W Ross, Wataru Miyamoto, John G Kennedy
AIM: To clarify the effectiveness of scaffold-based therapy for osteochondral lesions of the talus (OLT). METHODS: A systematic search of MEDLINE and EMBASE databases was performed during August 2016 and updated in January 2017. Included studies were evaluated with regard to the level of evidence (LOE) and quality of evidence (QOE) using the Modified Coleman Methodology Score. Variable reporting outcome data, clinical outcomes, and the percentage of patients who returned to sport at previous level were also evaluated...
October 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/29090195/histological-physical-studies-after-xenograft-of-porcine-ear-cartilage
#13
Yong Ah Ryu, Meiying Jin, Nakheon Kang
BACKGROUND: Because of the relatively similar size of organs to human and the physiological and structural similarities, the use of porcine as xenograft donors is progressing very actively. In this study, we analyzed the characteristics of porcine ear cartilage and evaluated its suitability as graft material in reconstructive and cosmetic surgery. METHODS: The auricular cartilage was harvested from two pigs, and subjected to histological examination by immunohistochemical staining...
September 2017: Archives of Craniofacial Surgery
https://www.readbyqxmd.com/read/29080059/-cartilage-regeneration-surgery-on-the-hip-what-is-feasible
#14
REVIEW
Stefan Landgraeber, Marcus Jäger, Stefan Fickert
Localized cartilage defects at the hip are mainly caused by pre-arthritic deformities, particularly by cam-type femoroacetabular impingement (FAI). Timely elimination of symptomatic deformities can prevent further progression such as cartilage defects. As the defects mostly occur in the anterolateral part of the acetabulum, they can be easily treated either by open surgery or by arthroscopy. To date the most effective methods of treatment are bone marrow stimulation, with or without a covering of biomaterials, and autologous chondrocyte transplantation...
November 2017: Der Orthopäde
https://www.readbyqxmd.com/read/29065700/murine-bone-marrow-mesenchymal-stromal-cells-respond-efficiently-to-oxidative-stress-despite-the-low-level-of-heme-oxygenases-1-and-2
#15
Witold Norbert Nowak, Hevidar Taha, Neli Kachamakova-Trojanowska, Jacek Stepniewski, Joanna Agata Markiewicz, Anna Kusienicka, Krzysztof Szade, Agata Szade, Karolina Bukowska-Strakova, Karolina Hajduk, Damian Klóska, Aleksandra Kopacz, Anna Grochot-Przeczek, Kathrin Barthenheier, Camille Cauvin, Jozef Dulak, Alicja Jozkowicz
AIMS: Mesenchymal stromal cells (MSCs) are heterogeneous cells from adult tissues, able to differentiate in vitro into adipocytes, osteoblasts or chondrocytes. Such cells are widely studied in regenerative medicine. However, the success of cellular therapy depends on the cell survival. Heme oxygenase-1 (HO-1, encoded by the Hmox1 gene), an enzyme converting heme to biliverdin, carbon monoxide, and Fe2+, is cytoprotective and can affect stem cell performance. Therefore, our study aimed to assess if Hmox1 is critical for survival and functions of murine bone marrow MSCs...
October 25, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29050153/-study-on-the-differentiation-of-rat-bone-marrow-mesenchymal-stem-cells-into-chondrocytes-induced-by-tgf-beta-3
#16
D B Liu, X S Han, W L Huang, J Deng, R F She
Objective: To explore the methods for the differentiation of rat bone marrow mesenchymal stem cells (BMMSCs) into chondrocytes induced by transforming growth factor (TGF)-beta 3 in vitro, and search for a reliable seed cell for the regeneration and repair of articular cartilage in osteoarthritis. Methods: SD rat femoral and tibial BMMSCs were cultured by the whole bone marrow adherent method, and then the purity was identified by flow cytometry. P3 generation cells were induced and differentiated into chondrocytes by the induction of differentiation medium containing TGF-beta 3, and cell chondrogenic differentiation ability at different induction time points was detected...
September 26, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29049142/13-93b3-bioactive-glass-a-new-scaffold-for-transplantation-of-stem-cell-derived-chondrocytes
#17
Kivanc Gunhan, Serkan Bariskan, Uzdan Uz, Seda Vatansever, Mujde Kivanc
Research using animal models gives human trials hope for recovery in many fields of regenerative medicine, although they are sometimes poor predictors for human experiences. Our goal was to investigate whether rat chondrocytes, differentiated from adipose-derived stem cells, could be transplanted using a new, easily shaped, bioactive glass scaffold, and to show the immunohistochemical results. Intraperitoneal and retroperitoneal adipose tissue was extracted from 6 male Wistar albino type rats. The fatty tissue samples were fragmented and incubated...
October 18, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29037743/the-effect-of-platelet-rich-fibrin-on-autologous-osteochondral-transplantation-an-in-vivo-porcine-model
#18
S Y Sheu, C H Wang, Y H Pao, Y T Fu, C H Liu, C H Yao, T F Kuo
BACKGROUND: This work aimed to evaluate the efficacy of cartilage transplantation to the medial femoral condyle±platelet-rich fibrin (PRF) augmentation in a porcine model. The hypothesis of the study was that PRF may act as a bioactive cell scaffold to fill defects and enhance cartilage regeneration. METHODS: Thirty-two knees of 16 miniature pigs were randomly assigned to four groups. The critical-size osteochondral defects (8x5mm) in femoral condyle of both knees were treated with one of the following: group 1-untreated controls; group 2-cartilage fragments alone; group 3-PRF alone; group 4-PRFT+cartilage fragments...
October 13, 2017: Knee
https://www.readbyqxmd.com/read/29020504/fibrocartilage-stem-cells-engraft-and-self-organize-into-vascularized-bone
#19
J Nathan, A Ruscitto, S Pylawka, A Soharby, C J Shawber, M C Embree
Angiogenesis is a complex, multicellular process that is critical for bone development and generation. Endochondral ossification depends on an avascular cartilage template that completely remodels into vascularized bone and involves a dynamic interplay among chondrocytes, osteoblasts, and endothelial cells. We have discovered fibrocartilage stem cells (FCSCs) derived from the temporomandibular joint (TMJ) mandibular condyle that generates cartilage anlagen, which is subsequently remodeled into vascularized bone using an ectopic transplantation model...
October 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/29018915/-non-cryoconserving-storage-strategies-for-fresh-osteochondral-allografts
#20
REVIEW
Luisa Marilena Schäck, Jan-Dierk Clausen, Sandra Noack, Afif Harb, Christian Krettek, Claudia Neunaber
BACKGROUND: The clinical outcome of fresh allogeneic osteochondral allografts (OCA) is greatly dependent on the number of viable chondrocytes at the time of implantation. The selection and preparation of a suitable recipient can be very time-consuming and the number of tissue donors is greatly limited; therefore, the preservation of high allograft viability before transplantation is a focal point of current research. OBJECTIVE: The objective of this review is to give an overview of established storage strategies for OCA and to serve as a decision-making aid for German clinics in the choice of a suitable storage strategy...
November 2017: Der Unfallchirurg
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