Effect of static magnetic field on the induction of micronuclei by some mutagens.

Yuji Suzuki; Yoshimitsu Toyama; Yuichi Miyakoshi; Masateru Ikehata; Hayato Yoshioka; Hidesuke Shimizu

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Effect of static magnetic field on the induction of micronuclei by some mutagens.

Author: Yuji SUZUKI ¹ ; Yoshimitsu TOYAMA ; Yuichi MIYAKOSHI ; Masateru IKEHATA ; Hayato YOSHIOKA ; Hidesuke SHIMIZU
Author Information

1. Department of Public Health and Environmental Medicine, The Jikei University School of Medicine, 3-25-8 Nishishinbashi, Minato-ku, 105-8461, Tokyo, Japan, suzuki@jikei.ac.jp.
Publication Type:Journal Article
Keywords: co-mutagenic; magnetic fields; micronuclei; mitomycin C; vincristine
From:Environmental Health and Preventive Medicine 2006;11(5):228-232
CountryJapan
Language:English
Abstract:
OBJECTIVESIt is important to assess the risk of static magnetic fields (SMFs) on human health, because epidemiological studies have indicated that SMFs play a role in the development of diseases such as leukemia and brain tumor. In our environment, we have numerous chances to be exposed to not only SMFs but also many chemicals containing mutagens. The aim of this study is to investigate the effect of SMFs on the induction of micronuclei induced by some mutagens.
METHODSBALB/c mice were exposed to 4.7 tesla (T) SMF for 24 hr immediately after the injection of carboquone (alkylating agent), colcemid (spindle poison), mitomycin C (cross-linking agent), vincristine (spindle poison), sodium fluoride (a byproduct of aluminum plants under strong SMF) or 1-ethyl-1-nitrosourea (brain tumor-, gliomas- and thymic lymphoma-inducing chemical).
RESULTSThe frequency of micronuclei induced by six mutagens increased after co-exposure to SMF.
CONCLUSIONSAn additive/synergistic effect of SMF and chemicals was observed from the results of increased frequency of micronuclei induced by mutagens in mouse bone marrow erythrocytes.