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eCAM Advance Access originally published online on October 5, 2006
eCAM 2007 4(1):59-63; doi:10.1093/ecam/nel055
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© 2006 The Author(s).
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commerical use, distribution, and reproduction in any medium, provided the original work is properly cited.

Recovery of Small-Sized Blood Vessels in Ischemic Bone Under Static Magnetic Field

Shenzhi Xu1,2, Naohide Tomita1, Ken Ikeuchi3 and Yoshito Ikada4

1International Innovation Center, Kyoto University Kyoto, Japan, 2Department of Sciences, Pip Tokyo Co. Ltd, Tokyo, Japan, 3Institute for Frontier Medical Sciences, Kyoto University Kyoto, Japan and 4Faculty of Medical Engineering, Suzuka University of Medical Science Mie, Japan

Effects of static magnetic field (SMF) on the vascularization in bone were evaluated using an ischemic bone model, where rat femoral artery was ligated. Magnetized and unmagnetized samarium–cobalt rods were implanted transcortically into the middle diaphysis of the ischemic femurs. Collateral circulation was evaluated by injection of microspheres into the abdominal aorta at the third week after ligation. It was found that the bone implanted with a magnetized rod showed a larger amount of trapped microspheres than that with an unmagnetized rod at the proximal and the distal region (P < 0.05 proximal region). There were no significant differences at the middle and the distal region. This tendency was similar to that of the bone mineral density in the SMF-exposed ischemic bone.

Keywords: blood vessel – ischemic model – microsphere – static magnetic field

For reprints and all correspondence: Naohide Tomita, International Innovation Center, Kyoto University, Kyoto, Japan. Tel & Fax: +81-75-753-9200; E-mail: ntomita{at}iic.kyoto-u.ac.jp

Received October 19, 2005; accepted July 5, 2006


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