Effect of Pulse-Modulated GSM-900 MHz Electromagnetic Field on the Electrochemotherapy Efficacy of 4T-1 Cells

سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 276

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شناسه ملی سند علمی:

JR_IJMP-15-4_010

تاریخ نمایه سازی: 18 تیر 1398

چکیده مقاله:

Introduction: Electrochemotherapy (ECT) is a cancer treatment modality to permeabilize cell membrane facilitating the non-permeant molecules to gain access to the cytosol of cells. Nevertheless, environmental electromagnetic fields (EMFs) may disturb the efficiency of ECT. The present study aimed to investigate the effect of EMFs 900 MHz pulse-modulated by 217 Hz extremely low-frequency fields on the efficiency of ECT Materials and Methods: The 4T-1 cells were exposed to 900 MHz radiofrequency (RF) modulated by 217 Hz fields at the power densities of 17, 162, and 349 µW/cm2 (related to antenna input powers of 3, 4, and 5 W at a distance of 15 cm) by a GSM900 MHz simulator. After exposure, the cells were divided into several groups, receiving no treatment, chemotherapy, electric pulse, and ECT. The cell viability was evaluated by MTT assay after 24 h. Results: The results demonstrated that 900 MHz RF pulse-modulated by 217 Hz EMF at 349 µW/cm2 increased the viability of the cells treated with EPs with the amplitude of 70 V/cm and frequency of 5 kHz (16%), ECT with 70 V/cm at 5 kHz (20%), and ECT with 60 V/cm at 5 kHz (16%), compared to their counterpart treatment group with no exposure. However, the fields had no significant effect on the efficacy of chemotherapy. Conclusion: As the findings of the current study indicated, environmental pulsed-modulated RF fields exerted an adverse influence on some antitumor therapies. Therefore, such effects should be taken into consideration in determining the optimal protocols of treatment. 

نویسندگان

mahsa mansourian

Department of Medical physics, Faculty of Medical science, Tarbiat Modares University, Tehran, Iran.

Seyed Mohamad Firoozabadi

Department of Medical Physics, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran.

Zuhair Mohammad Hassan

PhD, Professor of Immunonology. , Department of Immunology, Faculty of Medical science, Tarbiat Modares University, Tehran, Iran.

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