| RRC ID |
41690
|
| 著者 |
Kotani H, Kawaguchi H, Shimoaka T, Iwasaka M, Ueno S, Ozawa H, Nakamura K, Hoshi K.
|
| タイトル |
Strong static magnetic field stimulates bone formation to a definite orientation in vitro and in vivo.
|
| ジャーナル |
J Bone Miner Res
|
| Abstract |
The induction of bone formation to an intentional orientation is a potentially viable clinical treatment for bone disorders. Among the many chemical and physical factors, a static magnetic field (SMF) of tesla order can regulate the shapes of blood cells and matrix fibers. This study investigated the effects of a strong SMF (8 T) on bone formation in both in vivo and in vitro systems. After 60 h of exposure to the SMF, cultured mouse osteoblastic MC3T3-E1 cells were transformed to rodlike shapes and were orientated in the direction parallel to the magnetic field. Although this strong SMF exposure did not affect cell proliferation, it up-regulated cell differentiation and matrix synthesis as determined by ALP and alizarin red stainings, respectively. The SMF also stimulated ectopic bone formation in and around subcutaneously implanted bone morphogenetic protein (BMP) 2-containing pellets in mice, in which the orientation of bone formation was parallel to the magnetic field. It is concluded that a strong SMF has the potency not only to stimulate bone formation, but also to regulate its orientation in both in vitro and in vivo models. This is the first study to show the regulation of the orientation of adherent cells by a magnetic field. We propose that the combination of a strong SMF and a potent osteogenic agent such as BMP possibly may lead to an effective treatment of bone fractures and defects.
|
| 巻・号 |
17(10)
|
| ページ |
1814-21
|
| 公開日 |
2002-10-1
|
| DOI |
10.1359/jbmr.2002.17.10.1814
|
| PMID |
12369785
|
| MeSH |
Alkaline Phosphatase / analysis
Animals
Biomarkers
Bone Morphogenetic Protein 2
Bone Morphogenetic Proteins / pharmacology
Cell Differentiation
Cell Division
Cell Line
Cell Polarity
Drug Implants
Extracellular Matrix / metabolism
Humans
Magnetics*
Male
Mice
Osteoblasts / physiology*
Osteogenesis* / drug effects
Recombinant Proteins / pharmacology
Transforming Growth Factor beta*
|
| IF |
5.854
|
| 引用数 |
126
|
|
WOS 分野
|
ENDOCRINOLOGY & METABOLISM
|
| リソース情報 |
| ヒト・動物細胞 |
MC3T3-E1(RCB1126) |
