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Autologous chondrocyte implantation

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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/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
#2
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/29322876/study-of-telomere-length-in-preimplanted-cultured-chondrocytes
#3
Juan Manuel López-Alcorocho, Isabel Guillén-Vicente, Elena Rodríguez-Iñigo, Marta Guillén-Vicente, Tomás Fernando Fernández-Jaén, Rosa Caballero, Mercedes Casqueiro, Pilar Najarro, Steve Abelow, Pedro Guillén-García
Design In the process of cell division, the extremes of the eukaryotic chromosomes are progressively shortening, and this phenomenon is related to cell degeneration and senescence. The treatment of cartilage lesions with autologous chondrocytes implies that cells proliferate in an artificial environment. We have studied the viability of cultured chondrocytes after measurement of their telomere length before implantation. Methods Articular cartilage biopsies (B1, B2, and B3) were obtained from 3 patients (2 males and 1 female) with knee cartilage defects, who were going to be treated with chondrocyte implantation...
January 1, 2018: Cartilage
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
#4
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
#5
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/29284174/bilayer-matrix-autologous-chondrocyte-implantation-without-bone-graft-for-knee-osteochondral-lesion-less-than-8%C3%A2-mm-deep
#6
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/29219020/correlation-of-mri-appearance-of-autologous-chondrocyte-implantation-in-the-ankle-with-clinical-outcome
#7
Keith W Chan, Richard D Ferkel, Brian Kern, Sarah S Chan, Gregory R Applegate
The objective of this study was to characterize magnetic resonance imaging (MRI) findings and correlate with clinical results in patients who underwent autologous chondrocyte implantation (ACI) of osteochondral lesions of the talus (OLT). METHODS: Twenty-four grafts were evaluated at a mean 65.8 months after ACI for OLT. MRI was performed on a 1.5-T GE scanner using multiple sequences. Graft appearance was compared with preoperative MRI and evaluated for 6 criteria: defect fill, surface regularity, signal pattern, bone marrow edema, subchondral plate irregularity, and presence of cystic lesions...
January 2018: Cartilage
https://www.readbyqxmd.com/read/29218684/feasibility-of-arthroscopic-autologous-chondrocyte-implantation-in-the-hip-using-an-injectable-hydrogel
#8
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/29209868/laser-surface-modification-of-decellularized-extracellular-cartilage-matrix-for-cartilage-tissue-engineering
#9
Eva Goldberg-Bockhorn, Silke Schwarz, Rachana Subedi, Alexander Elsässer, Ricarda Riepl, Paul Walther, Ludwig Körber, Roman Breiter, Karl Stock, Nicole Rotter
The implantation of autologous cartilage as the gold standard operative procedure for the reconstruction of cartilage defects in the head and neck region unfortunately implicates a variety of negative effects at the donor site. Tissue-engineered cartilage appears to be a promising alternative. However, due to the complex requirements, the optimal material is yet to be determined. As demonstrated previously, decellularized porcine cartilage (DECM) might be a good option to engineer vital cartilage. As the dense structure of DECM limits cellular infiltration, we investigated surface modifications of the scaffolds by carbon dioxide (CO2) and Er:YAG laser application to facilitate the migration of chondrocytes inside the scaffold...
December 6, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29208903/a-novel-bioreactor-system-for-biaxial-mechanical-loading-enhances-the-properties-of-tissue-engineered-human-cartilage
#10
Christoph Meinert, Karsten Schrobback, Dietmar W Hutmacher, Travis J Klein
The ex vivo engineering of autologous cartilage tissues has the potential to revolutionize the clinical management of joint disorders. Yet, high manufacturing costs and variable outcomes associated with tissue-engineered implants are still limiting their application. To improve clinical outcomes and facilitate a wider use of engineered tissues, automated bioreactor systems capable of enhancing and monitoring neotissues are required. Here, we developed an innovative system capable of applying precise uni- or biaxial mechanical stimulation to developing cartilage neotissues in a tightly controlled and automated fashion...
December 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29206788/matrix-induced-autologous-chondrocyte-implantation-maci-using-a-cell-seeded-collagen-membrane-improves-cartilage-healing-in-the-equine-model
#11
Alan J Nixon, Holly D Sparks, Laila Begum, Sean McDonough, Michael S Scimeca, Nance Moran, Gloria L Matthews
BACKGROUND: Autologous chondrocyte implantation (ACI) using a collagen scaffold (matrix-induced ACI; MACI) is a next-generation approach to traditional ACI that provides the benefit of autologous cells and guided tissue regeneration using a biocompatible collagen scaffold. The MACI implant also has inherent advantages including surgical implantation via arthroscopy or miniarthrotomy, the elimination of periosteal harvest, and the use of tissue adhesive in lieu of sutures. This study evaluated the efficacy of the MACI implant in an equine full-thickness cartilage defect model at 1 year...
December 6, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29196261/a-674563-increases-chondrocyte-marker-expression-in-cultured-chondrocytes-by-inhibiting-sox9-degradation
#12
Tomohito Kobayashi, Kaori Fujita, Takashi Kamatani, Shuichi Matsuda, Noriyuki Tsumaki
The implantation of autologous chondrocytes is a therapeutic treatment for articular cartilage damage. However, the benefits are limited due to the expansion of chondrocytes in monolayer culture, which causes loss of chondrocytic characters. Therefore, culture conditions that enhance chondrocytic characters are needed. We screened 5822 compounds and found that A-674563 enhanced the transcription of several chondrocyte marker genes, including Col2a1, Acan and Col11a2, in mouse primary chondrocytes. Experiments using cycloheximide, MG132 and bafilomycin A1 have revealed that Sox9 is degraded through the ubiquitin-proteasome pathway and that A-674563 inhibits this degradation, resulting in larger amount of Sox9 protein...
November 28, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29161138/autologous-matrix-induced-chondrogenesis-a-systematic-review-of-the-clinical-evidence
#13
Liang Gao, Patrick Orth, Magali Cucchiarini, Henning Madry
BACKGROUND: The addition of a type I/III collagen membrane in cartilage defects treated with microfracture has been advocated for cartilage repair, termed "autologous matrix-induced chondrogenesis" (AMIC). PURPOSE: To examine the current clinical evidence regarding AMIC for focal chondral defects. STUDY DESIGN: Systematic review. METHODS: A systematic review was performed by searching PubMed, ScienceDirect, and Cochrane Library databases...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29160845/vascular-endothelial-growth-factor-sequestration-enhances-in-vivo-cartilage-formation
#14
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/29156973/cartilage-defect-treatment-using-high-density-autologous-chondrocyte-implantation-two-year-follow-up
#15
Juan Manuel Lopez-Alcorocho, Lucia Aboli, Isabel Guillen-Vicente, Elena Rodriguez-Iñigo, Marta Guillen-Vicente, Tomás F Fernández-Jaén, Santiago Arauz, Steve Abelow, Pedro Guillen-García
OBJECTIVE: The aim of this work was to study the short- and mid-term effectiveness and safety of high-density autologous chondrocyte implantation (HD-ACI) in the first 50 patients with knee cartilage damage treated in our unit. DESIGN: Fifty consecutive patients with cartilage lesions (Outerbridge grade III-IV) in the knee treated with HD-ACI were included in this study. Chondrocytes were isolated from a nonbearing cartilage area biopsy and were cultured until 40 to 50 million cells were obtained...
January 1, 2017: Cartilage
https://www.readbyqxmd.com/read/29146220/autologous-chondrocyte-implantation-for-talar-osteochondral-lesions-comparison-between-5-year-follow-up-magnetic-resonance-imaging-findings-and-7-year-follow-up-clinical-results
#16
Gherardo Pagliazzi, Francesca Vannini, Milva Battaglia, Laura Ramponi, Roberto Buda
Autologous chondrocyte implantation (ACI) is an established surgical procedure that has provided satisfactory results. The aim of the present study was to correlate the clinical outcomes of a series of 20 patients treated by ACI at a 7-year follow-up examination with the magnetic resonance imaging (MRI) T2-mapping 5-year follow-up findings. We evaluated 20 patients using the American Orthopaedic Foot and Ankle Society (AOFAS) score preoperatively and the established follow-up protocol until 87.2 ± 14.5 months...
November 14, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29128878/microfracture-is-more-cost-effective-than-autologous-chondrocyte-implantation-a-review-of-level-1-and-level-2-studies-with-5%C3%A2-year-follow-up
#17
Tommy Frøseth Aae, Per-Henrik Randsborg, Hilde Lurås, Asbjørn Årøen, Øystein Bjerkestrand Lian
PURPOSE: Focal cartilage defects in the knee may have devastating effect on the knee joint, where two of the main surgical treatment options are microfracture and autologous chondrocyte implantation. Comparative studies have failed to establish which method yields the best clinical results. A cost-effectiveness analysis of microfracture and autologous chondrocyte implantation would contribute to the clinical decision process. METHODS: A PubMed search identifying level I and level II studies with 5 year follow-up was performed...
November 11, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29125919/autologous-chondrocyte-implantation-sandwich-technique-compared-with-autologous-bone-grafting-for-deep-osteochondral-lesions-in-the-knee
#18
Tom Minas, Takahiro Ogura, Jeff Headrick, Tim Bryant
BACKGROUND: Treating symptomatic osteochondral defects is challenging, especially in young adults with deep (>8-10 mm) empty defects after osteochondritis dissecans (OCD) or collapsed condyles secondary to avascular necrosis (AVN). For this population, osteoarthritis (OA) is inevitable if articular congruence is not restored. PURPOSE: To describe the autologous chondrocyte implantation (ACI) "sandwich" technique with autologous bone grafting (ABG) and compare it with ABG alone for restoration of the osteochondral unit...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29114638/how-to-manage-a-failed-cartilage-repair-a-systematic-literature-review
#19
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
#20
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
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