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Electric and Magnetic Field Devices for Stimulation of Biological Tissues
Published on: May 15, 2021
Pulsed electromagnetic field stimulates cellular proliferation in human intervertebral disc cells
Hwan-Mo Lee1, Un-Hye Kwon, Hyang Kim
1Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Korea.
Yonsei Medical Journal
|September 30, 2010
Summary
Electromagnetic fields (EMF) stimulate human intervertebral disc (IVD) cell proliferation via nitric oxide and prostaglandin E2 pathways. This finding supports EMF
Area of Science:
- Biomedical Engineering
- Cell Biology
- Regenerative Medicine
Background:
- Intervertebral disc (IVD) degeneration is a major cause of low back pain.
- Cell therapy offers a promising approach for treating degenerative disc disease.
- Stimulating cell proliferation is crucial for effective cell therapy.
Purpose of the Study:
- To investigate the mechanism by which electromagnetic fields (EMF) influence cellular proliferation in human IVD cells.
- To determine the effects of EMF on DNA synthesis, proteoglycan synthesis, and chondrogenic gene expression in IVD cells.
- To elucidate the signaling pathways involved in EMF-induced proliferation of IVD cells.
Main Methods:
- Human IVD cells were cultured in 3D alginate beads and exposed to specific EMF parameters (650 Ω, 1.8 millitesla, 60 Hz).
- Cellular proliferation was assessed using MTT assay and [3H]-thymidine incorporation.
- Proteoglycan synthesis was measured via [35S]-sulfate incorporation, and gene expression was analyzed by RT-PCR for aggrecan and collagen types I and II.
- Mechanisms were explored using nitric oxide synthase inhibitor (NMMA) and prostaglandin E2 inhibitor (ASA).
Main Results:
- EMF exposure significantly increased DNA synthesis in human IVD cells without inducing cytotoxicity.
- No significant differences were observed in proteoglycan synthesis or chondrogenic gene expression (aggrecan, collagen types I and II) between EMF-exposed and control groups.
- Inhibition of nitric oxide (NO) or prostaglandin E2 (PGE2) pathways partially blocked the EMF-induced increase in DNA synthesis.
Conclusions:
- EMF effectively stimulates DNA synthesis in human IVD cells, indicating enhanced proliferation.
- The proliferative effect of EMF on IVD cells is partially mediated by NO and PGE2 signaling pathways.
- EMF holds potential as a therapeutic tool for stimulating IVD cell amplification in cell-based therapies for degenerative disc disease.
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