Related Experiment Videos
Biological effects of PEMF (pulsing electromagnetic field): an attempt to modify cell resistance to anticancer agents
P Pasquinelli1, M Petrini, L Mattii
1C.R.E.S.A.M., Pisa, Italy.
Abstract:
Pulsing Electromagnetic Field (PEMF) effects lead to a modification of the multidrug resistance (MDR) of cells in vitro and in vivo. The murine leukemic doxorubicin-resistant cell line, P388/Dx, subjected to PEMF irradiation in vitro, showed a significant difference in thymidine incorporation when the concentration of doxorubicin reached a level of 1 microgram/mL, which corresponds to the inhibition dose 50 (ID50). The human lymphoblastic leukemia vinblastine-resistant cell line, CEM/VLB100, also showed a significant modification under the same experimental conditions at the in vitro ID50 corresponding to a vinblastine concentration of 100 ng/mL. BDF1 mice transplanted with P388/Dx cells also had an increase in their life span when doxorubicin was injected intraperitoneally in fractionated doses, while being subjected to PEMF irradiation.
Insights
Pulsing Electromagnetic Field (PEMF) therapy can alter multidrug resistance (MDR) in cancer cells. This study shows PEMF influences doxorubicin and vinblastine resistance in leukemia cell lines and enhances chemotherapy efficacy in vivo.
Area of Science:
- Biophysics
- Cell Biology
- Oncology
Background:
- Multidrug resistance (MDR) is a major challenge in cancer chemotherapy.
- Pulsing Electromagnetic Field (PEMF) exposure has shown potential in modulating cellular processes.
Purpose of the Study:
- To investigate the effect of PEMF on drug-resistant leukemia cell lines in vitro.
- To evaluate the impact of PEMF on the efficacy of chemotherapy in vivo.
Main Methods:
- In vitro studies using murine P388/Dx and human CEM/VLB100 leukemia cell lines exposed to PEMF.
- In vivo studies involving BDF1 mice transplanted with P388/Dx cells and treated with doxorubicin and PEMF.
Main Results:
- PEMF significantly altered thymidine incorporation in doxorubicin-resistant P388/Dx cells at the ID50.
- PEMF also modified drug resistance in vinblastine-resistant CEM/VLB100 cells at their respective ID50.
- Mice treated with fractionated doxorubicin doses and PEMF showed an increased lifespan.
Conclusions:
- PEMF can modulate multidrug resistance in leukemia cells.
- PEMF may enhance the therapeutic effect of chemotherapy in treating resistant leukemias.