Journal
ARCHIVES OF DERMATOLOGICAL RESEARCH
Volume 304, Issue 7, Pages 521-527Publisher
SPRINGER
DOI: 10.1007/s00403-012-1205-9
Keywords
Electromagnetic radiation; beta-Glucan; Oxidative stress; Skin; Wireless devices
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In recent times, there is widespread use of 2.45-GHz irradiation-emitting devices in industrial, medical, military and domestic application. The aim of the present study was to investigate the effect of 2.45-GHz electromagnetic radiation (EMR) on the oxidant and antioxidant status of skin and to examine the possible protective effects of beta-glucans against the oxidative injury. Thirty-two male Wistar albino rats were randomly divided into four equal groups: control; sham exposed; EMR; and EMR + beta-glucan. A 2.45-GHz EMR emitted device from the experimental exposure was applied to the EMR group and EMR + beta-glucan group for 60 min daily, respectively, for 4 weeks. beta-glucan was administered via gavage at a dose of 50 mg/kg/day before each exposure to radiation in the treatment group. The activities of antioxidant enzymes, superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and catalase (CAT), as well as the concentration of malondialdehyde (MDA) were measured in tissue homogenates of the skin. Exposure to 2.45-GHz EMR caused a significant increase in MDA levels and CAT activity, while the activities of SOD and GSH-Px decreased in skin tissues. Systemic beta-glucan significantly reversed the elevation of MDA levels and the reduction of SOD activities. beta-glucan treatment also slightly enhanced the activity of CAT and prevented the depletion of GSH-Px activity caused by EMR, but not statistically significantly. The present study demonstrated the role of oxidative mechanisms in EMR-induced skin tissue damages and that beta-glucan could ameliorate oxidative skin injury via its antioxidant properties.
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