Journal
BIOELECTROMAGNETICS
Volume 36, Issue 3, Pages 219-232Publisher
WILEY
DOI: 10.1002/bem.21900
Keywords
electromagnetism; SH-SY5Y; oxidative stimulus; superoxide dismutase; reactive oxygen species
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Funding
- Italian National Institute of Insurance [4/2010]
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Electromagnetic fields (EMFs) have been linked to increased risk of cancers and neurodegenerative diseases; however, EMFs can also elicit positive effects on biological systems, and redox status seems crucially involved in EMF biological effects. This study aimed to assess whether a short and repeated pulsed EMF (PEMF) could trigger adaptive responses against an oxidative insult in a neuronal cellular model. We found that a 40min overall (four times a week, 10min each) pre-exposure to PEMF did not affect major physiological parameters and led to a significant increase of Mn-dependent superoxide dismutase activity in the human neuroblastoma SH-SY5Y cell line. In addition, we found PEMF-pre-exposed cells exhibited decreased reactive oxygen species production following a 30min H2O2 challenge, with respect to non pre-exposed cells. Our findings might provide new insights on the role played by short and repeated PEMF stimulations in the enhancement of cellular defenses against oxidative insults. Although studies in normal neuronal cells would be useful to further confirm our hypothesis, we suggest that specific PEMF treatments may have potential biological repercussions in diseases where oxidative stress is implicated. Bioelectromagnetics. Bioelectromagnetics. 36:219-232, 2015. (c) 2015 Wiley Periodicals, Inc.
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