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Oxidative Medicine and Cellular Longevity
Volume 2017, Article ID 2181942, 9 pages
Research Article

Benign Effect of Extremely Low-Frequency Electromagnetic Field on Brain Plasticity Assessed by Nitric Oxide Metabolism during Poststroke Rehabilitation

1Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, Lodz, Poland
2Department of Medical Biochemistry, Medical University of Lodz, Mazowiecka 6/8, Lodz, Poland
3Department of Physical Medicine, Medical University of Lodz, Pl. Hallera 1, Lodz, Poland
4Neurorehabilitation Ward, III General Hospital in Lodz, Milionowa 14, Lodz, Poland
5Department of Molecular Genetics, Laboratory of Medical Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Pomorska 141/143, Lodz, Poland

Correspondence should be addressed to Natalia Cichoń; lp.zdol.inu.loib@nohcic.ailatan

Received 12 May 2017; Revised 2 July 2017; Accepted 14 August 2017; Published 12 September 2017

Academic Editor: Tanea T. Reed

Copyright © 2017 Natalia Cichoń et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Nitric oxide (NO) is one of the most important signal molecules, involved in both physiological and pathological processes. As a neurotransmitter in the central nervous system, NO regulates cerebral blood flow, neurogenesis, and synaptic plasticity. The aim of our study was to investigate the effect of the extremely low-frequency electromagnetic field (ELF-EMF) on generation and metabolism of NO, as a neurotransmitter, in the rehabilitation of poststroke patients. Forty-eight patients were divided into two groups: ELF-EMF and non-ELF-EMF. Both groups underwent the same 4-week rehabilitation program. Additionally, the ELF-EMF group was exposed to an extremely low-frequency electromagnetic field of 40 Hz, 7 mT, for 15 min/day. Levels of 3-nitrotyrosine, nitrate/nitrite, and TNFα in plasma samples were measured, and NOS2 expression was determined in whole blood samples. Functional status was evaluated before and after a series of treatments, using the Activity Daily Living, Geriatric Depression Scale, and Mini-Mental State Examination. We observed that application of ELF-EMF significantly increased 3-nitrotyrosine and nitrate/nitrite levels, while expression of NOS2 was insignificantly decreased in both groups. The results also show that ELF-EMF treatments improved functional and mental status. We conclude that ELF-EMF therapy is capable of promoting recovery in poststroke patients.