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The antitumor effect of static and extremely low frequency magnetic fields against nephroblastoma and neuroblastoma. | LitMetric

AI Article Synopsis

  • Certain magnetic fields (MF) were studied for their potential to treat childhood cancers, specifically nephroblastoma and neuroblastoma, showing decreased cell viability in cancer cell lines after exposure.
  • The combination of a static MF and an extremely low frequency MF led to greater effectiveness in inhibiting cell proliferation and inducing apoptosis compared to using a static MF alone.
  • When combined with the chemotherapy drug cisplatin (DDP), MF treatment significantly reduced tumor mass in mouse models while minimizing side effects, suggesting a promising strategy for enhancing cancer treatment in pediatric patients.

Article Abstract

Certain magnetic fields (MF) have potential therapeutic antitumor effect whereas the underlying mechanism remains undefined. In this study, a well-characterized MF was applied to two common childhood malignancies, nephroblastoma and neuroblastoma. This MF has a time-averaged total intensity of 5.1 militesla (mT), and was generated as a superimposition of a static and an extremely low frequency (ELF) MF in 50 Hertz (Hz). In nephroblastoma and neuroblastoma cell lines including G401, CHLA255, and N2a, after MF exposure of 2 h per day, the cell viability decreased significantly after 2 days. After 3 days, inhibition rates of 17-22% were achieved in these cell lines. Furthermore, the inhibition rate was positively associated with exposure time. On the other hand, when using static MF only while maintaining the same time-averaged intensity of 5.1 mT, the inhibition rate was decreased. Thus, both time and combination of ELF field were positively associated with the inhibitory effect of this MF. Exposure to the field decreased cell proliferation and induced apoptosis. Combinational use of MF together with chemotherapeutics cisplatin (DDP) was performed in both in vitro and in vivo experiments. In cell lines, combinational treatment further increased the inhibition rate compared with single use of either DDP or MF. In G401 nephroblastoma tumor model in nude mice, combination of MF and DDP resulted in significant decrease of tumor mass, and the side effect was limited in mild liver injury. MF exposure by itself did not hamper liver or kidney functions. In summary, the antitumor effect of an established MF against neuroblastoma and nephroblastoma is reported, and this field has the potential to be used in combination with DDP to achieve increased efficacy and reduce side effects in these two childhood malignancies. Bioelectromagnetics. 39:375-385, 2018. © 2018 Wiley Periodicals, Inc.

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http://dx.doi.org/10.1002/bem.22124DOI Listing

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