Resonance effect of millimeter waves in the power range from 10-19 to 3 × 10-3 W/cm2 onEscherichia coli cells at different concentrations

Belyaev, Igor; Shcheglov, Victor S.; Alipov, Yevgeny D.; Polunin, V. A.

doi:10.1002/(sici)1521-186x(1996)17:4<312::aid-bem7>3.0.co;2-6

Cited by 68 publications

(19 citation statements)

References 19 publications

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“…However, for Wi-Fi exposure, this significant change was observed at 4.5 hours and for the RF simulator at the 12 th hour. Many studies have demonstrated that the bacterial response to electromagnetic fields is dependent on several factors including: intensity, frequency, duration of exposure, and other physicochemical properties of the fields (22,37,38). As mentioned, the frequency of Wi-Fi router was 2.4 GHz and RF simulator was 900 MHz, maximum bacterial response to this radiation occurred at different times, which was related to their frequencies.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the 900 MHz Radiofrequency Radiation Effects on the Antimicrobial Susceptibility and Growth Rate of Klebsiella pneumoniae

et al. 2017

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Introduction: Drug resistance to one or more antibiotics is mainly believed to be a serious threat to global public health which occurs by various mechanisms. The electromagnetic field as a nonchemical tool is capable of altering the antimicrobial susceptibility of bacteria. The aim of this study is the evaluation of the antimicrobial susceptibility of the Klebsiella pneumoniae to antibiotics before and after exposure to 900 MHz radiofrequency (RF) radiation produced by a mobile phone.Methods: Antimicrobial susceptibility of the bacteria to antibiotics disks were performed after exposure to 900 MHz radiofrequency radiation. Antimicrobial susceptibility was carried out by Kirby-Bauer and the inhibition zone of each antibiotic disk was measured (as mean). Additionally, growth variations under exposure were recorded and an outgrowth curve was drawn.Results: Based on the results, after 12 hours of exposure to 900MHz radiofrequency, there was observed a maximum increase in the sensitivity of K. pneumoniae and shown that radiofrequency (RF) radiation can change antimicrobial sensitivity significantly (P < 0.05). Also, the radiofrequency radiation effect on the bacterial proliferation was evaluated and showed that exposure enables the bacteria to grow faster in the exponential phase than the non-exposed bacteria. Conclusions:The findings of the study indicated that the sensitivity of K. pneumoniae was significantly increased to the various antibiotics after 12 hours of exposure to 900 MHz radiofrequency radiation. These observations could be interpreted by the concept of non-linearity in the responses of K. pneumoniae to different antibiotics after exposure to electromagnetic radiofrequency radiation and can be useful in the management of serious infectious diseases.

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Section: Discussionmentioning

confidence: 99%

Evaluation of the 900 MHz Radiofrequency Radiation Effects on the Antimicrobial Susceptibility and Growth Rate of Klebsiella pneumoniae

et al. 2017

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“…Bacterial effects of extremely high frequency EMI might be explained by EMI effects on membrane structure and function [13][14][15], water properties [2,8,16,17], and on genome or DNA [18][19][20][21] and/or by the EMI transformation into informative biological signals at specific resonant frequencies [3,13,22]. Besides, extremely high frequency EMI can be used as a convenient band for communications within and between bacteria [3,22].…”

Section: Introductionmentioning

confidence: 71%

“…The sharp resonance influence of extremely high frequency EMI on bacterial membrane [4,[13][14][15] and on genome or DNA [18][19][20][21] and other types of biological macromolecules as well as on structure and properties of water [2,8,16,17] are likely [13]. It was suggested with that, in bacteria, all or some of the degrees of freedom of certain biological structures take part in coherent self sustained oscillations, which are fed with metabolic energy.…”

Section: Discussionmentioning

confidence: 99%

“…Besides, extremely high frequency EMI can be used as a convenient band for communications within and between bacteria [3,22]. There is evidence that, regardless of intensities of EMI, 41.5, 51.8, and 70.6 GHz are resonant frequencies for E. coli [18,19,23] but 70.6 GHz-not for water [17]. Interestingly, the elevated decrease in E. coli growth rate under anaerobic conditions was shown with coherent EMI of 45-53 GHz; especially with 51.8 and 53 GHz [8].…”

Section: Introductionmentioning

confidence: 99%

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Low Intensity Electromagnetic Irradiation with 70.6 and 73 GHz Frequencies Affects Escherichia coli Growth and Changes Water Properties

Torgomyan

Kalantaryan

Trchоunian

2011

Cell Biochem Biophys

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The low intensity electromagnetic irradiation (EMI) of the 70.6 and 73 GHz frequency is resonant for Escherichia coli but not for water. In this study, E. coli irradiation with this EMI during 1 h directly and in bi-distilled water or in the assay buffer with those frequencies resulted with noticeable changes in bacterial growth parameters. Furthermore, after EMI, 2 h rest of bacteria renewed their growth in 1.2-fold, but repeated EMI--had no significant action. Moreover, water absorbance, pH, and electric conductance were changed markedly after such irradiation. The results point out that EMI of the 70.6 and 73 GHz frequency can interact with bacteria affecting growth and in the same time with the surrounding medium (water) as well.

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“…The experiments proved that without reducing the effect of anticancer drugs, it became possible to reduce adverse toxic reaction of the organism to the drugs. However, the mechanisms of low-intensity MMWs action on biological object still remain unclear [5,6,8].…”

Section: Introductionmentioning

confidence: 99%

Influence of Low Intensity Coherent Electromagnetic Millimeter Radiation (Emr) on Aqua Solution of Dna

Kalantaryan¹,

Vardevanyan²,

Babayan³

et al. 2010

PIER Letters

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Abstract-The thermostability and density of water-salt solutions of DNA, irradiated by non thermal coherent millimeter electromagnetic waves with frequency 64.5 GHz have been investigated using the methods of spectrophotometry and densitometry. It is shown that the thermostability of DNA and density of its solutions are increased, depending on time of irradiation. It is expected that under the influence of millimeter electromagnetic radiation the hydration of DNA and ions of Na + that are present in solution decrease. As a result, the physicochemical characteristics of DNA are changed.

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Resonance effect of millimeter waves in the power range from 10-19 to 3 × 10-3 W/cm2 onEscherichia coli cells at different concentrations

Cited by 68 publications

References 19 publications

Evaluation of the 900 MHz Radiofrequency Radiation Effects on the Antimicrobial Susceptibility and Growth Rate of Klebsiella pneumoniae

Evaluation of the 900 MHz Radiofrequency Radiation Effects on the Antimicrobial Susceptibility and Growth Rate of Klebsiella pneumoniae

Low Intensity Electromagnetic Irradiation with 70.6 and 73 GHz Frequencies Affects Escherichia coli Growth and Changes Water Properties

Influence of Low Intensity Coherent Electromagnetic Millimeter Radiation (Emr) on Aqua Solution of Dna

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