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Journal of Biosciences

, Volume 43, Issue 2, pp 263–276 | Cite as

Electromagnetic radiation 2450 MHz exposure causes cognition deficit with mitochondrial dysfunction and activation of intrinsic pathway of apoptosis in rats

  • Sukesh Kumar Gupta
  • Manoj Kumar Mesharam
  • Sairam Krishnamurthy
Article

Abstract

Electromagnetic radiation (EMR) can induce or modulate several neurobehavioral disorders. Duration and frequency of exposure of EMR is critical to develop cognitive disorders. Even though EMR-2450 is widely used, its effects on cognition in relation to mitochondrial function and apoptosis would provide better understanding of its pathophysiological effects. Therefore, a comparative study of different frequencies of EMR exposure would give valuable information on effects of discrete frequencies of EMR on cognition. Male rats were exposed to EMR (900, 1800 and 2450 MHz) every day for 1 h for 28 consecutive days. The cognitive behavior in terms of novel arm entries in Y-maze paradigm was evaluated every week after 1 h to last EMR exposure. Animals exposed to EMR-2450 MHz exhibited significant cognitive deficits. EMR-2450 MHz caused loss of mitochondrial function and integrity, an increase in amyloid beta expression. There was release of cytochrome-c and activation of apoptotic factors such as caspase-9 and -3 in the hippocampus. Further, there was decrease in levels of acetylcholine, and increase in activity of acetyl cholinesterase, indicating impairment of cholinergic system. Therefore, exposure of EMR-2450 in rats caused cognitive deficit with related pathophysiological changes in mitochondrial and cholinergic function, and amyloidogenesis.

Keywords

Apoptosis cognition electromagnetic radiation – 900, 1800, 2450 MHz hippocampus mitochondria 

Notes

Acknowledgements

SKG is thankful to Indian Institute of Technology–Banaras Hindu University (IIT-BHU), Varanasi, India, for the fellowship as teaching assistant. All animal experiments were carried out according to the principles stated in guidelines of laboratory animal care (National Research Council US Committee for the Update of the Guide for the Care and Use of Laboratory Animals 2011 guidelines). All the experimental methods were approved by the Institutional animal ethical committee, Banaras Hindu University (Approval No.: Dean/2015/CAEC/1414).

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Copyright information

© Indian Academy of Sciences 2018

Authors and Affiliations

  1. 1.Neurotherapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of TechnologyBanaras Hindu UniversityVaranasiIndia
  2. 2.Department of Electronics Engineering, Indian Institute of TechnologyBanaras Hindu UniversityVaranasiIndia

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