Influence of extremely low frequency magnetic field on total protein and –SH groups concentrations in liver homogenates
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Wyższa Szkoła Biznesu i Nauk o Zdrowiu / The Academy of Business Administration and Health Sciences, Łódź, Poland
Wojewódzki Zespół Zakładów Opieki Zdrowotnej Centrum Leczenia Chorób Płuc i Rehabilitacji / Provincial Complex of Health Care Units, Center of Lung Diseases and Rehabilitation, Łódź, Poland (Oddział Rehabilitacji Ogólnoustrojowej / Rehabilitation Department)
Uniwersytet Medyczny / Medical University, Łódź, Poland Katedra Fizjologii Doświadczalnej i Klinicznej, Zakład Fizjologii Krążenia / Chair of Experimental and Clinical Physiology, (Department of Cardiovascular Physiology)
Wyższa Szkoła Kosmetyki i Nauk o Zdrowiu / College of Cosmetology and Health Sciences, Łódź, Poland
Corresponding author
Elżbieta Ciejka   

Specjalistyczny Szpital Gruźlicy, Chorób Płuc i Rehabilitacji, Oddział Rehabilitacji Ogólnoustrojowej, ul. Szpitalna 5, 95-080 Tuszyn
Med Pr 2014;65(5):639–644
Background: Free radicals are atoms, molecules or their fragments, whose excess leads to the development of oxidative stress, the cause of many neoplastic, neurodegenerative and inflammatory diseases, as well as aging of organisms. Industrial pollution, tobacco smoke, ionizing radiation, ultrasound and magnetic fields are the major exogenous sources of free radicals. The low frequency magnetic field is commonly applied in physiotherapy. The aim of the present study was to evaluate the effect of extremely low frequency magnetic field (ELF-MF) on the concentration of sulfhydryl groups (SH) and proteins in liver tissues of experimental animals depending on the time of exposure to the field. Material and Methods: Twenty one Sprague-Dawley male rats, aged 3–4 months were randomly divided into 3 experimental groups (each containing 7 animals): controls (group I), the rats exposed to ELF-MF of 40 Hz, 7 mT (this kind of the ELF-MF is mostly used in magnetotherapy), 30 min/day for 2 weeks (group II) and the rats exposed to 40 Hz, 7 mT for 60 min/day for 2 weeks (group III). The concentrations of proteins and sulfhydryl groups in the liver tissues were determined after exposure to magnetic fields. Results: Exposure to low magnetic field: 40 Hz, 7 mT for 30 min/day and 60 min/day for 2 weeks caused a significant increase in the concentration of –SH groups and total protein levels in the liver tissues. Conclusions: The study results suggest that exposure to magnetic fields leads to the development of adaptive mechanisms to maintain the balance in the body oxidation-reduction and in the case of the studied parameters does not depend on the time of exposure. Med Pr 2014;65(5):639–644