Changes in Free Radical Processes under the Influence of Low-Frequency Electromagnetic Field in Rats.

We studied the effect of a low-frequency (LF) electromagnetic field (EMF) on the state of the antioxidant system of Wistar rats in vivo. It was found that changes in activity of antioxidant enzymes and HO content in the blood plasma of rats exposed to LF EMF depended on the frequency of EMF. We propose a mechanism of the protective effects of low doses of ROS the generation of which is stimulated by LF EMF.

Effect of valinomycin on ion transport in bacterial cells and on bacterial growth.

The antimicrobial action of valinomycin relative to the K+ and Na+ contents of the medium has been investigated in several species of bacteria, particularly in Streptococcus faecalis, which effects energy-linked transport exclusively via degradation of glycolytic ATP, Micrococcus lysodeikticus, effecting active ion transport by respiration and Staphylococcus aureus, the energy-dependent ion transport of which is due to both glycolytic ATP degradation and respiration. It was demonstrated that valinomycin does not act on K+ transport in the glycolysing cells in the same manner as it does on respiring cells under similar conditions. Addition of valinomycin to respiring cells leads to an increase in K+ influx against the concentrational gradient in both growing and resting cells.