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Repair of osteochon...
Repair of osteochondral defects with recombinant human type II collagen gel and autologous chondrocytes in rabbit
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- Pulkkinen, Hertta (författare)
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
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- Tiitu, Virpi (författare)
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
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- Valonen, Piia (författare)
- A. I. Virtanen Institute, University of Eastern Finland, Kuopio, Finland
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- Jurvelin, Jukka (författare)
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland
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- Rieppo, Lassi (författare)
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland
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- Töyräs, Juha (författare)
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland; Department of Clinical Neurophysiology, Kuopio University Hospital, Kuopio, Finland
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- Silvast, Tuomo (författare)
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland
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- Lammi, Mikko, 1961- (författare)
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland; Biocenter Kuopio, University of Eastern Finland, Kuopio, Finland,Chondrogenic and Osteogenic Differentiation Group
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- Kiviranta, Ilkka (författare)
- Department of Orthopaedics and Traumatology, University of Helsinki, and Helsinki University Central Hospital, Helsinki, Finland; Department of Orthopaedics and Traumatology, Jyväskylä Central Hospital, Jyväskylä, Finland
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Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland A I. Virtanen Institute, University of Eastern Finland, Kuopio, Finland (creator_code:org_t)
- Elsevier, 2013
- 2013
- Engelska.
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Ingår i: Osteoarthritis and Cartilage. - : Elsevier. - 1063-4584 .- 1522-9653. ; 21:3, s. 481-490
- Relaterad länk:
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http://www.sciencedi...
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http://www.oarsijour...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- SummaryObjectiveRecombinant human type II collagen (rhCII) gels combined with autologous chondrocytes were tested as a scaffold for cartilage repair in rabbits in vivo.MethodAutologous chondrocytes were harvested, expanded and combined with rhCII-gel and further pre-cultivated for 2 weeks prior to transplantation into a 4 mm diameter lesion created into the rabbit's femoral trochlea (n = 8). Rabbits with similar untreated lesions (n = 7) served as a control group.ResultsSix months after the transplantation the repair tissue in both groups filled the lesion site, but in the rhCII-repair the filling was more complete. Both repair groups also had high proteoglycan and type II collagen contents, except in the fibrous superficial layer. However, the integration to the adjacent cartilage was incomplete. The O'Driscoll grading showed no significant differences between the rhCII-repair and spontaneous repair, both representing lower quality than intact cartilage. In the repair tissues the collagen fibers were abnormally organized and oriented. No dramatic changes were detected in the subchondral bone structure. The repair cartilage was mechanically softer than the intact tissue. Spontaneously repaired tissue showed lower values of equilibrium and dynamic modulus than the rhCII-repair. However, the differences in the mechanical properties between all three groups were insignificant.ConclusionWhen rhCII was used to repair cartilage defects, the repair quality was histologically incomplete, but still the rhCII-repairs showed moderate mechanical characteristics and a slight improvement over those in spontaneous repair. Therefore, further studies using rhCII for cartilage repair with emphasis on improving integration and surface protection are required.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Ortopedi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Orthopaedics (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinsk bioteknologi -- Medicinsk bioteknologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Medical Biotechnology -- Medical Biotechnology (hsv//eng)
Nyckelord
- Cartilage tissue engineering
- Collagen
- Hydrogel
- Recombnant protein
- Autologous chondrocyte implantation
- Animal model
- biomechanics
- biomekanik
- Materials Science
- materialvetenskap
- ortopedi
- Orthopaedics
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- art (ämneskategori)
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Pulkkinen, Hertt ...
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Tiitu, Virpi
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Valonen, Piia
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Jurvelin, Jukka
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Rieppo, Lassi
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Töyräs, Juha
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Silvast, Tuomo
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Lammi, Mikko, 19 ...
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Kiviranta, Ilkka
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