M M Movahedi - PhD, Department of Medical Physics and Biomedical Engineering, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
F Nouri - PhD,Department of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
A Tavakoli Golpaygani - MD,Department of Biomedical Engineering, Standard Research Institute, Karaj, Iran
L Ataee - PhD,Shiraz University of Medical Sciences, Shiraz, Iran
S Amani - PhD,Shiraz University of Medical Sciences, Shiraz, Iran
M Taheri - PhD,Department of Medical Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran

Background: The increasing use of telecommunication devices such as Wi-Fi modems and mobile phones in the recent years can change the cellular structure of microorganisms so the generation of electromagnetic waves has led to concern in the community whenever be exposed to these fields and may have harmful effects on human health.Material and Methods: Standard strains of bacteria were prepared on Mueller-Hinton agar for bacterial growth to obtain ۰.۵ McFarland turbidity (۱.۵ × ۱۰۸ CFU) of bacteria. Antibiotic susceptibility testing using the Kirby-Bauer disk diffusion method was done. For Staphylococcus aureus and Pseudomonas aeruginosa, antibiotics susceptibility test was conducted. The test group was exposed to electromagnetic waves emitted by mobile phone simulator with a frequency of ۹۰۰ MHz and the control group didin’t exposed.Results: The results revealed that increasing duration of exposure to electromagnetic waves emitted by the mobile simulators with a frequency of ۹۰۰ MHz especially after ۲۴ h of exposure, can increase bacterial resistance in S. aureus, and P. aeruginosa.Conclusion: Several factors can cause bacterial resistance against antibiotics. One of these factors is the electromagnetic waves emitted from mobile simulator with a frequency of ۹۰۰ MHz, which can increase the permeability of the cell wall of bacteria.

Microbial Sensitivity Tests, Electromagnetic waves, Mobile simulator, Pseudomonas Aeruginosa, Staphylococcus aureus