Electromagnetic Field Effect on Bone Marrow Stem Cells Differentiation and Nucleoli AgNOR

Nader  Asadian; Taha  Jadidi; Majid  Jadidi

doi:10.18502/fbt.v10i2.12217

Nader Asadian Student Research Committee, Semnan University of Medical Sciences, Semnan, Iran
Taha Jadidi Student Research Committee, Semnan University of Medical Sciences, Semnan, Iran
Majid Jadidi Department of Medical Physics, Semnan University of Medical Sciences, Semnan, Iran

DOI: https://doi.org/10.18502/fbt.v10i2.12217

Keywords: Electromagnetic Field; Bone Marrow Stem Cell; Cell Viability; Differentiation; Ag Nucleolar Organizer Regions.

Abstract

Purpose: Numerous studies have described the effect of Electromagnetic Fields (EMFs) in the promotion of Bone Marrow Stem Cell (BMSC) differentiation. We aimed to investigate the influence of frequency (10 and 100 Hz) and different pulse shapes (sine, rectangular, and triangular) of EMF on rats' BMSCs.

Materials and Methods: The BMSCs in 6 groups were exposed to EMF for 1 h/ 7 days. The BMSCs viability was estimated by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) test. The cresyl violet labeled the Nissl bodies, and the silver nitrate staining was done to evaluate the BMSCs nucleoli AgNORs.

Results: The MTT test verified that EMF and pulse shape did not affect cell viability. In Nissl bodies staining most of the large neurons were related to the rectangular 10 Hz EMF group. The majority of the differentiated BMSCs were astrocytes, microglia, and oligodendrocyte in the triangular 100 Hz EMF group. Although the silver nitrate staining confirmed the effect of 10 Hz EMF, pulse shape alteration did not affect AgNOR parameters. In conclusion, we presented a low-magnetic flux density EMF (400 µT) to assess the responses of BMSCs nuclei.

Conclusion: The findings showed that BMSCs differentiation was frequency-dependent. Further investigations are recommended for recognizing the function of EMF on BMSCs.