J Korean Med Sci.  1997 Apr;12(2):128-134. 10.3346/jkms.1997.12.2.128.

In-vivo study on the harmful effect of the extremely low frequency unipolar pulsating magnetic field in mice

• Kang GH
• Lee CH
• Seo JW
• Sung RH
• Chung YH
• Lee SK
• Suh YH
• Chi JG

• KMID: 1079659
• DOI: http://doi.org/10.3346/jkms.1997.12.2.128

Abstract

We studied the biological effect of a magnetic field on murine brain and kidney. Magnetic field we used was generated by Magno-DR apparatus (Hanil Co., Korea) which produced a high density unipolar square pulsating magnetic field, about 0.3 approximately 0.5 Tesla at 7 Hertz. Animals were placed in the chamber of the machine for various times from 4 hours to 24 hours. Histological sections of brain and kidney were made after perfusion fixation with paraformaldehyde. The light microscopic examination showed eosinophilic change of cytoplasm and positive immunohistochemical reaction to amyloid precursor protein in the neurons of the cerebral cortex. However, the thalamus and brain stem were less affected. The changes in the brain was seen in the mouse exposed more than 12 hours. The renal tubular epithelium showed degenerated tubules scattered in cortical area but little change was noted in glomeruli in the cortex and collecting tubules in the medulla. Immunohistochemistry of the kidney showed weakly positive reaction for the amyloid precursor protein in the distal tubular epithelium after 4 hours of exposure. These data suggest that strong pulsating magnetic fields could induce deleterious effect on the murine brain tissue and renal cortical tubules.

MeSH Terms

Amyloid beta-Protein Precursor/analysis
Animal
Brain/pathology*
Kidney/pathology*
Kidney/chemistry
Magnetics*
Male
Mice
Mice, Inbred C3H