Effects of extremely low-frequency magnetotherapy on proliferation of human dermal fibroblasts.
Author: Pasi F1,2, Sanna S3, Paolini A1,4, Alquati M3, Lascialfari A3,5, Corti ME3, Liberto RD4, Cialdai F6, Monici M6, Nano R1
Affiliation:
1a Department of Biology and Biotechnologies "L. Spallanzani" , University of Pavia , Pavia , Italy.
2b Department of Radiation Oncology , IRCCS Policlinico San Matteo Foundation , Pavia , Italy.
3c Department of Physics , University of Pavia , Pavia , Italy.
4d Department of Medical Physics , IRCCS Policlinico San Matteo Foundation , Pavia , Italy.
5e Department of Physics , University of Milano , Milano , Italy.
6f ASA Research Division, Department of Experimental and Clinical Biomedical Sciences , University of Florence , Florence , Italy.
Conference/Journal: Electromagn Biol Med.
Date published: 2016 Jun 2
Other:
Volume ID: 1-10 , Word Count: 205
Extremely low-frequency electromagnetic fields (ELF-EMFs) applied in magnetotherapy have frequency lower than 100 Hz and magnetic field intensity ranging from 0.1 to 20 mT. For many years, the use of magnetotherapy in clinics has been increasing because of its beneficial effects in many processes, e.g., skin diseases, inflammation and bone disorders. However, the understanding of the microscopic mechanisms governing such processes is still lacking and the results of the studies on the effects of ELF-EMFs are controversial because effects derive from different conditions and from intrinsic responsiveness of different cell types.In the present study, we studied the biological effects of 1.5 h exposure of human dermal fibroblasts to EMFs with frequencies of 5 and 50 Hz and intensity between 0.25 and 1.6 mT. Our data showed that the magnetic treatment did not produce changes in cell viability, but gave evidence of a sizeable decrease in proliferation at 24 h after treatment. In addition, immunofluorescence experiments displayed an increase in tubulin expression that could foreshadow changes in cell motility or morphology. The decrease in proliferation with unchanged viability and increase in tubulin expression could be consistent with the triggering of a transdifferentiation process after the exposure to ELF-EMFs.
KEYWORDS: Extremely low-frequency electromagnetic fields; fibroblasts; magnetotherapy; proliferation
PMID: 27254779 [PubMed - as supplied by publisher]
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