Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Issue title: Selected papers presented at the International Symposium on Nanotoxicity Assessment and Biomedical Environmental Application of Fine Particles and Nanotubes, Hokkaido, Japan, 16–17 June 2008, Part 2
Article type: Research Article
Authors: Watanabe, Yuji; | Sato, Koichi | Yukumi, Shungo | Yoshida, Motohira | Yamamoto, Yuji | Doi, Takashi | Sugishita, Hiroki | Naohara, Takashi | Maehara, Tsunehiro | Aono, Hiromichi | Kawachi, Kanji
Affiliations: Department of Surgery, Ehime University Graduate School of Medicine, Toon-shi, Japan | Department of Materials Science and Engineering, Faculty of Engineering, Ehime University, Matsuyama, Japan | Department of Physics, Faculty of Science, Ehime University, Matsuyama, Japan
Note: [] Address for correspondence: Yuji Watanabe, MD, Department of Surgery, Ehime University Graduate School of Medicine, Toon-shi, 791-0295, Japan. Tel.: +81 89 960 5331; Fax: +81 89 960 5335; E-mail: yuji@m.ehime-u.ac.jp.
Abstract: Magnetic metal particles are known to induce heat energy under an alternating magnetic field (AMF). We developed a local tumor-heating device incorporating an MgFe2O4 needle for the purpose of mild ablation for cancer treatment. A needle made from sintered MgFe2O4 particles was embedded in the hepatic or breast tumors. Tumors were then heated by the energy dissipated from the needle exposed to an AMF. We sequentially evaluated histological changes, cellular activity of tumors, and the extent of thermal effect using nicotinamide adenine dinucleotide (NADH) diaphorase and terminal deoxynucleotidyl tranferase-mediated digoxigenin-DUTP nick-end labeling (TUNEL) staining. The mean temperature of the tumor tissue during heating was about 60°C. Nuclei of the tumor cells became hyper-chromatin immediately after heating. The injured area spread progressively until 3 days after heating; when the area was surrounded by fibroblasts (meaning is not clear). Tumors disappeared after treatment without complications. This is the first time that the complete death of tumor cells has been realized by raising the tumor temperature above 60°C using the heat generated by magnetic metal particles exposed to AMF. This device may be useful in the future for local hyperthemic treatment of human cancers.
Keywords: Inductive heating, magnesium ferrite, cancer treatment, ablation
DOI: 10.3233/BME-2009-0569
Journal: Bio-Medical Materials and Engineering, vol. 19, no. 2-3, pp. 101-110, 2009
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl