Effect of weak combined static and extremely low-frequency alternating magnetic fields on tumor growth in mice inoculated with the Ehrlich ascites carcinoma

• Published in: Bioelectromagnetics Vol. 30; no. 5; pp. 343 - 351
• Main Authors: Novikov, Vadim V., Novikov, Gleb V., Fesenko, Evgeny E.
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.07.2009
• Subjects: Animals; Carcinoma, Ehrlich Tumor - pathology; Carcinoma, Ehrlich Tumor - therapy; Ehrlich ascites carcinoma; Magnetic Field Therapy - adverse effects; Magnetic Field Therapy - methods; Magnetics; Male; malignant tumors; Mice; Mice, Inbred BALB C; Time Factors; weak magnetic fields
• ISSN: 0197-8462; 1521-186X
• DOI: 10.1002/bem.20487

It has been shown that the ultralow‐frequency extremely weak alternating component of combined magnetic fields (MFs) exhibits a marked antitumor activity. The parameters of this component have been found (frequency 1, 4.4, 16.5 Hz or the sum of these frequencies; intensity 300, 100, 150–300 nT, respectively) at which this MF in combination with a collinear static MF of 42 µT inhibits or suppresses the growth of Ehrlich ascites carcinoma (EAC) in mice. It was shown that the exposure of mice with EAC to combined MFs causes structural changes in some organs (liver, adrenal glands), which are probably due to the total degradation of the tumor tissue. In mice with transplanted EAC, the tumor tissue after exposure to weak MFs was practically absent, as distinct from control animals in which the invasion of the tumor into the adipose tissue surrounding the kidneys, mesenteric lymph nodes, and spermatic appendages was observed. In animals without tumors, no pathological deviations from the norm in the structure of organs and tissues occurred after exposure to weak MF, indicating that this factor per se is not toxic to the organism. Bioelectromagnetics 30:343–351, 2009. © 2009 Wiley‐Liss, Inc.