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C-fos Expression of Vestibular Nucleus in C57BL/6 Mouse Under the 7 Tesla Ultra High Magnetic Field
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Mi Joo Kim, Min Joo Jung, Ji Hye Bae, Eun Ji Lee, Duk Hyun Kim, Gyu Cheol Han
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Res Vestib Sci. 2011;10(1):26-29.
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 Abstract
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- Background and Objectives: A typical side effect of super high magnetic field is dizziness and it is expected that 7 Tesla (T) super high magnetic field will have temporary influence on vestibular nucleus. Prevalence rate of dizziness generally increases with advancing years, so this study discusses whether the influence of 7 T super high magnetic field differs depending on the age.
Materials and Methods: C57BL/6 mice weighting from 10-40 g were categorized into 4-week-old and 16-week-old groups. They were exposed to 7 T magnetic field and immunohistochemical staining was done to observe expression of c-fos protein in vestibular nucleus of mice.
Results: Control group with normal vestibular system did not show c-fos protein. However, mice exposed to 7 T magnetic field showed c-fos expression selectively on medial and lateral parts of vestibular nucleus and there was no significant difference of c-fos expression between both sides (p<0.05). There was statistically significant difference between the different age group: 16-week-old mice group showed higher number of cells expressing c-fos protein than 4-week-old mice group did (p<0.05).
Conclusion: It is statistically significant that 7 T super high magnetic field is more influential to older age group.
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