About the mechanism of influence of low-intense millimeter waves on biological membranes

Yemets, B. G.; Yemets, M.B.

doi:10.1109/msmw.2001.947369

Cited by 4 publications

(7 citation statements)

References 8 publications

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“…Biological effects of MWs and MMWs could be divided into two categories: (i) thermal effects of highpower radiation, and (ii) non-thermal short-and longterm effects. In spite of existence of some theoretical hypotheses of non-thermal bioelectromagnetic interactions, for example [Yemets and Yemets, 2001;Panagopoulos et al, 2002], their mechanisms are not fully understood. Recent studies have reported that nonthermal MW and MMW radiations may interfere with some cellular processes.…”

Section: Introductionmentioning

confidence: 99%

Low‐power millimeter wave radiations do not alter stress‐sensitive gene expression of chaperone proteins

Zhadobov

Sauleau

Coq

et al. 2006

Bioelectromagnetics

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This article reports experimental results on the influence of low-power millimeter wave (MMW) radiation at 60 GHz on a set of stress-sensitive gene expression of molecular chaperones, namely clusterin (CLU) and HSP70, in a human brain cell line. Selection of the exposure frequency is determined by its near-future applications for the new broadband civil wireless communication systems including wireless local area networks (WLAN) for domestic and professional uses. Frequencies around 60 GHz are strongly attenuated in the earth's atmosphere and such radiations represent a new environmental factor. An exposure system operating in V-band (50-75 GHz) was developed for cell exposure. U-251 MG glial cell line was sham-exposed or exposed to MMW radiation for different durations (1-33 h) and two different power densities (5.4 microW/cm(2) or 0.54 mW/cm(2)). As gene expression is a multiple-step process, we analyzed chaperone proteins induction at different levels. First, using luciferase reporter gene, we investigated potential effect of MMWs on the activation of transcription factors (TFs) and gene promoter activity. Next, using RT-PCR and Western blot assays, we verified whether MMW exposure could alter RNA accumulation, translation, or protein stability. Experimental data demonstrated the absence of significant modifications in gene transcription, mRNA, and protein amount for the considered stress-sensitive genes for the exposure durations and power densities investigated. The main results of this study suggest that low-power 60 GHz radiation does not modify stress-sensitive gene expression of chaperone proteins.

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Section: Introductionmentioning

confidence: 99%

Low‐power millimeter wave radiations do not alter stress‐sensitive gene expression of chaperone proteins

Zhadobov

Sauleau

Coq

et al. 2006

Bioelectromagnetics

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“…Also might be explained due to increases of free H ? and OH -ions dispersions or local supersaturation of air [8,16,33]; and water conductivity changes might result by pH changes.…”

Section: Discussionmentioning

confidence: 99%

“…The evidence that the energy of extremely high frequency EMI could accumulate into the structures of water till critical values and increase of free H ? and OH -dispersions or local super-saturation of air [33] by modification of molecular cluster structuring [13,17] might explain these results. The oscillating and fluctuating character of pH values in bi-distilled water depending on time, spontaneous fluctuations of geomagnetic field and environmental conditions, and other types of intra correlation between physical and chemical parameters of water can occur [8,16]; and water conductivity changes might result by pH changes.…”

Section: Emi Effects On Watermentioning

confidence: 99%

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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“…Звідси випливає, що існує якийсь оптимальний режим опромінення, що забезпечує достатні для запуску механізму відповідного реагування зміни в опроміненому біоматеріалу. Як критерій ефективності біологічної дії опромінюючого світла пропонується використовувати товщину неперемішуваного шару води, що примикає до мембрани еритроцита [6,7]. За цим критерієм проведено і порівняння рівня біологічного впливу повного потоку світла УФ лампи та різних спектральних інтервалів ртутного випромінювача.…”

Section: постановка проблеми у світі широко відомі такі види фототера...unclassified

“…Методом ядерного магнітного резонансу (ЯМР) (спінове відлуння) авторами були проведені дослідження щодо ефективного впливу електромагнітного випромінювання ( ЕМВ) ультрафіолетового і оптичного діапазону на еритроцити людини. Об'єктом дослідження був примембранний водний шар еритроцитів [5,6]. Досліджувалася вплив ЕМВ УФ і оптичного діапазону на "ефективну" товщину примембранного шару еритроцитів (δ), (в неопромінених зразках δ = 2,57´10 -5 (м) [5,6].…”

Section: постановка проблеми у світі широко відомі такі види фототера...unclassified

Influence of ultraviolet radiation on kinetic characteristics in erythrocytes

Алмазова

Lysychenko²

2021

ИИМ

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Erythrocytes were irradiated with an ultraviolet lamp of the VMT type (λ = 253.7 nm). The kinetic characteristics in irradiated and non-irradiated blood samples were compared by the acid (chemical) erythrogram method and by the counter transport method. Obtained: - by the method of acidic erythrograms it was found that in ultraviolet-irradiated blood samples there is a decrease in the time of half hemolysis. - ultraviolet radiation increases the speed of counter movement of ions through erythrocyte membranes. - a decrease in the time of half hemolysis and an increase in the rate of counter transfer of ions, irradiated blood samples, is due to a decrease in the "effective" thickness of the near-membrane diffusion layer - an immiscible layer of water adjacent to the erythrocyte membrane. A decrease in the "effective thickness" of the near-membrane water layer changes the rate of metabolic processes in the "cell - intercellular medium" system, changing the mode of cell functioning. The altered mode of functioning is a biological response to light radiation. Red blood cells with an altered mode of functioning are stimulus signals that force the body to mobilize resources to fight pathology. These circumstances can predict the creation of a universal phototherapeutic equipment for extracorporeal blood irradiation based on LEDs with certain exposure parameters. Figs.: 4. Tabl.: 3. Refs.: 12 titles.

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About the mechanism of influence of low-intense millimeter waves on biological membranes

Cited by 4 publications

References 8 publications

Low‐power millimeter wave radiations do not alter stress‐sensitive gene expression of chaperone proteins

Low‐power millimeter wave radiations do not alter stress‐sensitive gene expression of chaperone proteins

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

Influence of ultraviolet radiation on kinetic characteristics in erythrocytes

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