Journal of Osteoarthritis
Open Access

Research Article

Polyhydroxylated C60 Fullerenes Prevent Chondrocyte Catabolic Activity at Nanomolar Concentrations in Osteoarthritis

¹Department of Sports Medicine, St. Marianna University School of Medicine, Sugao 2-16-1, Miyamae-ku, Kawasaki 216-8511, Japan

²Department of Orthopaedic Surgery, St. Marianna University School of Medicine, Sugao 2-16-1, Miyamae-ku, Kawasaki 216-8512, Japan

³Department of Frontier Medicine, Institute of Medical Science, St. Marianna University School of Medicine, Sugao 2-16-1, Miyamae-ku, Kawasaki 216-8512, Japan

^*Corresponding Author:

Kazuo Yudoh
Department of Frontier Medicine
Institute of Medical Science
St. Marianna University School of Medicine
Sugao 2-16-1, Miyamae-ku, Kawasaki 216-8512
Japan
Tel: +81-44-977-8111
Fax: +81-44-978-2036
E-mail: yudo@marianna-u.ac.jp

Received date: March 14, 2016; Accepted date: April 19, 2016; Published date: April 22, 2016

Citation: Yoshioka H, Yui N, Yatabe K, Fujiya H, Musha H, et al. (2016) Polyhydroxylated C60 Fullerenes Prevent Chondrocyte Catabolic Activity at Nanomolar Concentrations in Osteoarthritis. J Ost Arth 1:115.

Copyright: © 2016 Yoshioka H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Aim: Recently, numerous reports have demonstrated that oxidative stress and related chondrocyte aging may participate in the development of osteoarthritis (OA). To further understand the pathogenesis and degenerative process of OA, we have studied water-soluble polyhydroxylated C60 fullerene, a strong free radical scavenger, as an anti-oxidant.

Method: We examine the therapeutic effects of five types of water-soluble polyhydroxylated C60 fullerenes [C60(OH)₁₀, C60(OH)₂₄, C60(OH)₂₆, C60(OH)₃₆, C60(OH)₄₄] on OA-related factor-induced catabolic responses in osteoarthritic chondrocytes. In the presence or absence of polyhydroxylated C60 fullerenes [C60(OH)₁₀, C60(OH)₂₄, C60(OH)₂₆, C60(OH)₃₆, C60(OH)₄₄] (0.1, 1.0, 10.0 or 100 nM), human osteoarthritic chondrocytes were treated with IL-1β (10.0 ng/mL). After 24 hours incubation, chondrocyte activities were examined.

Results: Water-soluble polyhydroxylated C60 fullerenes inhibited OA-related catabolic responses (IL-1β- upregulation of cartilage degrading enzyme production and downregulation of proteoglycan production) in OA chondrocytes. C60(OH)₁₀ C60(OH)₂₄ and C60(OH)₂₆ showed a stronger chondroprotective effect than C60(OH)₃₆ or C60(OH)₄₄.

Conclusion: Our findings indicate that polyhydroxylated C60 fullerenes, especially C60(OH)₁₀ C60(OH)₂₄ and C60(OH)₂₆, may have a part to protect against OA related factor-mediated downregulation of osteoarthritic chondrocyte activities. These data may reveal a novel pathologic mechanism linking oxidative stress-induced development of OA.

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