線虫の誘引・忌避行動における60Hz交流磁界影響(生体磁気・医療応用)

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In this research, we examined whether magnetic fields exerted any influence on the nervous system of the nematode C. elegans. Both during exposure to magnetic fields and after exposure to magnetic fields, we examined the influence of magnetic fields by observation of the behavior of the worm in response to certain chemicals. After exposure to magnetic fields (60Hz, 0.5T) for one hour, some achievement rates for the volatile attractant Diacetyl of the worm decreased in comparison with the non-exposure group. Moreover, some breakthrough rates for CuSO_4, a chemical that the worm avoids, increased in comparison with the non-exposure group. In particular, the breakthrough rate for CuSO_4 of the worm during exposure to magnetic fields increased greatly in comparison with the breakthrough rate of the worm after exposure to magnetic fields. These results suggest that the parts of the worm's nervous system that relate to DA and CuSO_4 are influenced by magnetic fields, and that there are more effects on the nervous system during than after exposure to magnetic fields.
2006-05-01