Journal
INTERNATIONAL JOURNAL OF RADIATION BIOLOGY
Volume 97, Issue 10, Pages 1461-1469Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09553002.2021.1956009
Keywords
Radiation hormesis; antioxidants; anxiolytic; anxiety; mineral water; balneotherapy
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The study aimed to investigate the effects of radon hormesis balneotherapy on the oxidant and antioxidant systems, as well as anxiety reactions in rats. Results showed that inhalation of radon led to a decrease in anxiety levels and activated antioxidant mechanisms. The rats in the radon therapy group showed less anxiety behavior compared to the control groups.
Purpose The aim of our research was to study the effect of radon hormesis balneotherapy using natural thermal waters of Tskaltubo spring, practically, its effect on oxidant and antioxidant systems and anxiety reactions in rats. Radon is a natural gas with radioactive properties, which can have a hermetic effect when used in small doses. Radon was used to activate antioxidant mechanisms in rats, which resulted an anxiolytic effect and positively enhanced the effect of balneotherapy. Materials and methods To study the effect of radon in balneotherapy, groups of experimental animals (rats) were exposed to three different treatments. The radon-containing waters of Tskaltubo spring were inhaled in one group and 5 after taking the water in another group. Saline was used for inhalation in animals of the saline group. In animals of the control and sham control groups, inhalation was not used. To assess the anxiolytic effect of radon inhalation, the anxiety was induced and behavioral tests were performed (the open field and the elevated plus-maze test) after 24 h and 5 days of inhalation procedures. Results The anxiety test results showed that exposure to low doses of radon led to a decrease in the level of anxiety in rats. The data show that the total distance traveled by rats in the open field test after inhalation of radon was significantly greater than that by animals in the sham control and control groups. During the open field and elevated plus-maze tests, rats that had inhaled radon spent more time in the central part of the open field and on the open arms of the maze than did the other groups of rats. In the group of rats that had not inhaled radon, an increase in anxiety was observed. The basis of this reaction was an increase in the glutathione concentration. Conclusion Based on our research, it can be concluded that the inhalation of small doses of radon, associated with treatments of waters from the Tskaltubo spring, activated the antioxidant systems of the body and enhanced the positive effect of balneotherapy. Clinically, this is expressed as a decrease in anxiety. Inhalation of small doses of radon activated antioxidant processes in the brain, causing an increase in glutathione/glutathione disulfide ratio in the brain.
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