IMR Press / FBL / Volume 11 / Issue 2 / DOI: 10.2741/1914

Frontiers in Bioscience-Landmark (FBL) is published by IMR Press from Volume 26 Issue 5 (2021). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on imrpress.com as a courtesy and upon agreement with Frontiers in Bioscience.

Open Access Article
Hydrostatic pressure increases apoptosis in cartilage-constructs produced from human osteoarthritic chondrocytes
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1 Department of Orthodontics, Case Western Reserve University School of Dentistry, Cleveland, Ohio 44106-4946, USA
2 Department of Orthopaedics, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106-4946
3 Skeletal Research Center, Department of Biology, Case Western Reserve University
4 Department of Medicine/Division of Rheumatic Diseases, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106-4946
Front. Biosci. (Landmark Ed) 2006, 11(2), 1690–1695; https://doi.org/10.2741/1914
Published: 1 May 2006
Abstract

Tissue-engineering is considered a promising avenue for developing human articular cartilage implants that can be employed for resurfacing damaged cartilage in the early stages of osteoarthritis. In the present study, human cartilage-constructs were produced from human osteoarthritic chondrocytes maintained on a scaffold of HYAFF®-11 in perfusion mini-bioreactors or after implantation and recovery from nude or SCID mice after 3 weeks. The human cartilage-construct extracellular matrix reacted positively with anti-Type II collagen monoclonal antibody, but not with anti-Type I or anti-Type X collagen monoclonal antibodies. A significant portion of the cartilage-construct extracellular matrix stained metachromatic with Toluidine blue-O indicative of sulfated-proteoglycan deposition. Cyclic hydrostatic pressure applied for 4 hrs at 5 MPa using a 1 Hertz sinusoidal frequency significantly increased (p < 0.02) the proportion of apoptotic cells in the cartilage-constructs (41% ± 4.2%; mean ± SD) compared to control cartilage-constructs (28.5 ± 8.4%).

Keywords
Human
Chondrocytes
Tissue-Engineering
Articular Cartilage-Constructs
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