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Journal of Bone and Joint Surgery - British Volume, Vol 90-B, Issue 9, 1249-1255.
doi: 10.1302/0301-620X.90B9.20671  
Copyright © 2008 by British Editorial Society of Bone and Joint Surgery
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Re-implantation of tumour tissue treated by cryotreatment with liquid nitrogen induces anti-tumour activity against murine osteosarcoma

H. Nishida, MD, Postdoctoral Fellow1; H. Tsuchiya, MD, PhD, Professor1; and K. Tomita, MD, PhD, Professor Chairman1

1 Department of Orthopaedic Surgery, Graduate School of Medical Science Kanazawa University, 13-1 Takaramachi, Kanazawa 920-8641, Japan.

Correspondence should be sent to Professor H. Tsuchiya; e-mail: tsuchi{at}med.kanazawa-u.ac.jp

We evaluated the possible induction of a systemic immune response to increase anti-tumour activity by the re-implantation of destructive tumour tissue treated by liquid nitrogen in a murine osteosarcoma (LM8) model. The tumours were randomised to treatment by excision alone or by cryotreatment after excision. Tissue from the tumour was frozen in liquid nitrogen, thawed in distilled water and then re-implanted in the same animal. In addition, some mice received an immunological response modifier of OK-432 after treatment. We measured the levels of interferon-gamma and interleukin-12 cytokines and the cytotoxicity activity of splenocytes against murine LM8 osteosarcoma cells. The number of lung and the size of abdominal metastases were also measured.

Re-implantation of tumour tissue after cryotreatment activated immune responses and inhibited metastatic tumour growth. OK-432 synergistically enhanced the anti-tumour effect. Our results suggest that the treatment of malignant bone tumours by reconstruction using autografts containing tumours which have been treated by liquid nitrogen may be of clinical value.






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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General