Title:Exposure to Low-Frequency Radiation Changes the Expression of Nestin, VEGF, BCRP and Apoptosis Markers During Glioma Treatment Strategy:
An In Vitro Study
Volume: 17
Issue: 1
Author(s): Maryam Amirinejad, Seyed Hassan Eftekhar-Vaghefi*, Seyed Noureddin Nematollahi Mahani, Moein Salari, Rasoul Yahyapour and Meysam Ahmadi-Zeidabadi*
Affiliation:
- Department of Anatomy, Afzalipour School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman,
Iran
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman,
Iran
Keywords:
Low-frequency radiation, nestin, VEGF, glioma, apoptosis, BCRP.
Abstract:
Background: Exposure to physical contamination during chemotherapy, including
non-ionizing electromagnetic fields, raises concerns about the widespread sources of exposure
to this type of radiation. Glioblastoma multiforme (GBM) is an aggressive central nervous
system tumor that is hard to treat due to resistance to drugs such as temozolomide (TMZ).
Objective: Electromagnetic fields (EMF) and haloperidol (HLP) may have anticancer effects. In
this study, we investigated the effects of TMZ, HLP, and EMF on GBM cell lines and analyzed
the association between non-ionizing radiation and the risk of change in drug performance.
Methods: Cell viability and reactive oxygen species (ROS) generation were measured by MTT
and NBT assay, respectively. Then, the expression levels of breast cancer-resistant protein
(BCRP), Bax, Bcl2, Nestin, vascular endothelial growth factor (VEGF) genes, and P53, Bax,
and Bcl2 Proteins were evaluated by real-time PCR and western blot.
Results: Co-treatment of GBM cells by HLP and TMZ enhanced apoptosis in T-98G and A172
cells by increasing the expression of P53 and Bax and decreasing Bcl-2. Interestingly, exposure
of GBM cells to EMF decreased apoptosis in the TMZ+HLP group.
Conclusion: In conclusion, EMF reduced the synergistic effect of TMZ and HLP. This hypothesis
that patients who are treated for brain tumors and suffer from depression should not be
exposed to EMF is proposed in the present study. There appears to be an urgent need to reconsider
exposure limits for low-frequency magnetic fields, based on experimental and epidemiological
research, the relationship between exposure to non-ionizing radiation and adverse human
health effects.