Autoimmune processes after long-term low-level exposure to electromagnetic fields (the results of an experiment). Part 4. Manifestation of oxidative intracellular stress-reaction after long-term non-thermal EMF exposure of rats

• Published in: Radiat͡s︡ionnai͡a︡ biologii͡a︡, radioėkologii͡a Vol. 50; no. 1; p. 22
• Main Authors: Grigor'ev, Iu G, Mikhaĭlov, V F, Ivanov, A A, Mal'tsev, V N, Ulanova, A M, Stavrakova, N M, Nikolaeva, I A, Grigor'ev, O A
• Format: Journal Article
• Language: Russian
• Published: Russia (Federation) 01-01-2010
• Subjects: Animals; Antibody Specificity; Autoantibodies - blood; Autoantibodies - immunology; Electromagnetic Fields - adverse effects; Immunoglobulin G - blood; Immunoglobulin M - blood; Male; Oxidative Stress - immunology; Rats; Rats, Wistar; Time Factors
• ISSN: 0869-8031

This paper presents the results of the study of the effects of long-term low-level exposure of rats to microwaves. Rats were exposed in far field to 2450 MHz continuous wave fields providing an incident power density at the cages of 500 microW/cm2 for 7 hours daily for a total of 30 days resulting in a whole-body SAR of 0.16 +/- 0.04 W/kg. Three groups ("EMF-exposure", "sham-exposure" and cage-control) were formed, each consisting of 16 rats. Circulating antibodies (IgA, IgG and IgM) directed against 16 chemical substances were evaluated in coded serum from each group of rats by enzyme multiplied analysis (ELISA test). An increased amount of compounds resulting from interaction of amino acids with nitric oxide (NO) or its derivatives (NO2-Tyrosine, NO-Arginine, NO-Cysteine + NO-Bovine Serum Albumin, NJ-Methionine + NO-Asparagine + No-Histidine, NO-BTrypnohan + NJ-Tyrosin), fatty acids with small chains, hydroxylated fatty acids, palmitic/myristic/oleic acid, AZE (product of oxidation of fatty acids) was found in blood serum from EMF-exposed rats. As a rule, antibodies to conjugated antigens were seen for IgM, rarely seen for IgG and were completely absent for IgA. The levels of antibodies were higher on day 7 after the exposure compared to those on day 14 after the exposure.