The influence of extremely weak alternating magnetic fields on the regeneration of planarians and the gravitropic response of plants

Belova, N. A.; Ermakov, Artem M.; Znobishcheva, A. V.; Srebnitskaya, L. K.; Lednev, V. V.

doi:10.1134/s0006350910040196

Cited by 25 publications

(24 citation statements)

References 4 publications

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“…This study (48) supports the hypothesis that 'exposure to magnetic fields at mean intensities of 2-15 mT can induce chromosomal damage'. Apart from that, the hydrogen nuclear polarisation model (49) predicts a biological response for oscillating magnetic field strengths above 0.1 mT. The presence of a static magnetic field is required and biological effects can be expected for all frequencies below a few hundred hertz.…”

Section: Biological Effects and Icnirp Limitsmentioning

confidence: 99%

Pineal melatonin level disruption in humans due to electromagnetic fields and ICNIRP limits

Halgamuge

2012

Radiation Protection Dosimetry

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The International Agency for Research on Cancer (IARC) classifies electromagnetic fields (EMFs) as 'possibly carcinogenic' to humans that might transform normal cells into cancer cells. Owing to high utilisation of electricity in day-to-day life, exposure to power-frequency (50 or 60 Hz) EMFs is unavoidable. Melatonin is a natural hormone produced by pineal gland activity in the brain that regulates the body's sleep-wake cycle. How man-made EMFs may influence the pineal gland is still unsolved. The pineal gland is likely to sense EMFs as light but, as a consequence, may decrease the melatonin production. In this study, more than one hundred experimental data of human and animal studies of changes in melatonin levels due to power-frequency electric and magnetic fields exposure were analysed. Then, the results of this study were compared with the International Committee of Non-Ionizing Radiation Protection (ICNIRP) limit and also with the existing experimental results in the literature for the biological effect of magnetic fields, in order to quantify the effects. The results show that this comparison does not seem to be consistent despite the fact that it offers an advantage of drawing attention to the importance of the exposure limits to weak EMFs. In addition to those inconsistent results, the following were also observedfrom this work: (i) the ICNIRP recommendations are meant for the well-known acute effects, because effects of the exposure duration cannot be considered and (ii) the significance of not replicating the existing experimental studies is another limitation in the power-frequency EMFs. Regardless of these issues, the above observation agrees with our earlier study in which it was confirmed that it is not a reliable method to characterise biological effects by observing only the ratio of AC magnetic field strength to frequency. This is because exposure duration does not include the ICNIRP limit. Furthermore, the results show the significance of disruption of melatonin due to exposure to weak EMFs, which may possibly lead to long-term health effects in humans.

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Section: Biological Effects and Icnirp Limitsmentioning

confidence: 99%

Pineal melatonin level disruption in humans due to electromagnetic fields and ICNIRP limits

Halgamuge

2012

Radiation Protection Dosimetry

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“…Only a few studies of EMF effects on plants [Tkalec et al, 2005[Tkalec et al, ,2007[Tkalec et al, ,2009Sharma et al, 2009] have been reported. In early studies seeds were exposed to extremely low frequency (ELF) magnetic fields or RF radiation in order to investigate biological effects [Bigu-Del-Blanco et al, 1977;Belova and Lednev, 2001;Belova et al, 2007;Tkalec et al, 2009;Shine et al, 2011], however, the results are inconsistent.…”

Section: Introductionmentioning

confidence: 99%

Reduced growth of soybean seedlings after exposure to weak microwave radiation from GSM 900 mobile phone and base station

Halgamuge

See

Eberhardt

2015

Bioelectromagnetics

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The aim of this work was to study possible effects of environmental radiation pollution on plants. The association between cellular telephone (short duration, higher amplitude) and base station (long duration, very low amplitude) radiation exposure and the growth rate of soybean (Glycine max) seedlings was investigated. Soybean seedlings, pre-grown for 4 days, were exposed in a gigahertz transverse electromagnetic cell for 2 h to global system for mobile communication (GSM) mobile phone pulsed radiation or continuous wave (CW) radiation at 900 MHz with amplitudes of 5.7 and 41 V m(-1) , and outgrowth was studied one week after exposure. The exposure to higher amplitude (41 V m(-1)) GSM radiation resulted in diminished outgrowth of the epicotyl. The exposure to lower amplitude (5.7 V m(-1)) GSM radiation did not influence outgrowth of epicotyl, hypocotyls, or roots. The exposure to higher amplitude CW radiation resulted in reduced outgrowth of the roots whereas lower CW exposure resulted in a reduced outgrowth of the hypocotyl. Soybean seedlings were also exposed for 5 days to an extremely low level of radiation (GSM 900 MHz, 0.56 V m(-1)) and outgrowth was studied 2 days later. Growth of epicotyl and hypocotyl was found to be reduced, whereas the outgrowth of roots was stimulated. Our findings indicate that the observed effects were significantly dependent on field strength as well as amplitude modulation of the applied field.

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“…Most experiments devoted to the effect of weak combined alternating (AC) and static (DC) magnetic fields (MFs) on biosystems have been performed using fields with the amplitude of the AC component of tens of microteslas against the background of the static MF of comparable strength. However, there is substantial evidence indicating that very weak alternating MFs of the nanotesla range are also capable of inducing marked biological effects [Juutilainen et al, 1987;Berman et al, 1990;Liburdy et al, 1993;Novikov et al, 1996Novikov et al, , 2005Novikov et al, , 2008Persinger et al, 1999;Belova and Lednev, 2001;Blackman et al, 2001;Novikov, 2004;Bobkova et al, 2005;Belova et al, 2007]. It should be noted that in the majority of cases, the experiments with very weak AC MFs were conducted against the background of the geomagnetic field whose magnetic flux density is $50 mT.…”

Section: Introductionmentioning

confidence: 99%

Effect of weak combined static and extremely low‐frequency alternating magnetic fields on tumor growth in mice inoculated with the Ehrlich ascites carcinoma

Novikov

Новиков

Фесенко

2009

Bioelectromagnetics

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It has been shown that the ultralow-frequency extremely weak alternating component of combined magnetic fields (MFs) exhibits a marked antitumor activity. The parameters of this component have been found (frequency 1, 4.4, 16.5 Hz or the sum of these frequencies; intensity 300, 100, 150-300 nT, respectively) at which this MF in combination with a collinear static MF of 42 microT inhibits or suppresses the growth of Ehrlich ascites carcinoma (EAC) in mice. It was shown that the exposure of mice with EAC to combined MFs causes structural changes in some organs (liver, adrenal glands), which are probably due to the total degradation of the tumor tissue. In mice with transplanted EAC, the tumor tissue after exposure to weak MFs was practically absent, as distinct from control animals in which the invasion of the tumor into the adipose tissue surrounding the kidneys, mesenteric lymph nodes, and spermatic appendages was observed. In animals without tumors, no pathological deviations from the norm in the structure of organs and tissues occurred after exposure to weak MF, indicating that this factor per se is not toxic to the organism.

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The influence of extremely weak alternating magnetic fields on the regeneration of planarians and the gravitropic response of plants

Cited by 25 publications

References 4 publications

Pineal melatonin level disruption in humans due to electromagnetic fields and ICNIRP limits

Pineal melatonin level disruption in humans due to electromagnetic fields and ICNIRP limits

Reduced growth of soybean seedlings after exposure to weak microwave radiation from GSM 900 mobile phone and base station

Effect of weak combined static and extremely low‐frequency alternating magnetic fields on tumor growth in mice inoculated with the Ehrlich ascites carcinoma

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