[Effects of Nano-Selenium on Cognition Performance of Mice Exposed in 1800 MHz Radiofrequency Fields]

Wei Sheng Yan Jiu. 2014 Jan;43(1):16-21.
[Article in Chinese]

Abstract

Objective: To study the effects of nano-selenium (NSe) on cognition performance of mice exposed to 1800 MHz radiofrequency fields (RF).

Methods: Male mice were randomly divided into four groups, control and nano-Se low, middle and high dose groups (L, M, H). Each group was sub-divided into three groups, RF 0 min, RF 30 min and RF 120 min. Nano-se solution (2, 4 and 8 microg/ml) were administered to mice of L, M, H groups by intra-gastric injection respectively, 0.5 ml/d for 50 days, the conctral group were administered with distilled water. At the 21st day, the mice in RF subgroup were exposed to 208 microW/cm2 1800 MHz radiofrequency fields (0, 30 and 120 min/d respectively) for 30 days. The cognitive ability of the mice were tested with Y-maze. Further, the levels of MDA, GABA, Glu, Ach and the activities of CAT and GSH-Px in cerebra were measured.

Results: Significant impairments in learning and memory (P < 0.05) were observed in the RF 120 min group, and with reduction of the Ach level and the activities of CAT and GSH-Px and increase of the content of GABA, Glu and MDA in cerebrum. NSe enhanced cognitive performance of RF mice, decreased GABA, Glu and MDA levels, increased Ach levels, GSH-Px and CAT activities.

Conclusion: NSe could improve cognitive impairments of mice exposed to RF, the mechanism of which might involve the increasing antioxidation, decreasing free radical content and the changes of cerebra neurotransmitters.

Publication types

  • English Abstract
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antioxidants / metabolism
  • Cognition / physiology
  • Cognition / radiation effects*
  • Cognition Disorders / prevention & control*
  • Electromagnetic Fields / adverse effects*
  • Environmental Exposure / analysis*
  • Male
  • Maze Learning / drug effects
  • Maze Learning / radiation effects
  • Metal Nanoparticles
  • Mice
  • Neurotransmitter Agents / metabolism
  • Protective Agents / pharmacology
  • Radio Waves
  • Selenium / pharmacology*

Substances

  • Antioxidants
  • Neurotransmitter Agents
  • Protective Agents
  • Selenium