Bas O, Odaci E, Kaplan S, Acer N. (2009). 900 MHz electromagnetic field exposure affects qualitative and quantitative features of hippocampal pyramidal cells in adult rat. Brain Research. 1265, 178–185.

  • A statistically significant decrease in the pyramidal cells of the hippocampus and an increase in dark cells.

Bas O, Odaci E, Mollaoglu H, Ucok K, Kaplan S. (2009). Chronic prenatal exposure to the 900 megahertz electromagnetic field induces pyramidal cell loss in the hippocampus of newborn rats. Toxicol Ind Health. 25, 377–384.

  • Results: A significant reduction in the total number of pyramidal cells in the cornu ammonis of the hippocampus, which involves short-term memory and learning.
  • Sixteen-week old rats are comparable to the age of human teenagers.

Bin Lv, Zhiye Chen, Tongning Wu, Qing Shao, Duo Yan, Lin Ma, Ke Lu, Yi Xie. (2014). The alteration of spontaneous low frequency oscillations caused by acute electromagnetic fields exposure. Clin Neurophysiol. 125(2), 277-86.

  • 30 min LTE 4G exposure modulated the spontaneous low frequency fluctuations in brain regions.

Jing J, Yuhua Z, Xiao-qian Y, Rongping J, Dong-mei G, Xi C. (2012). The influence of microwave radiation from cellular phone on fetal rat brain, Electromagn Biol Med.
31(1), 57-66.

  • Pregnant rats were exposed to different intensities of microwave radiation from cellular phones.
  • Significant content differences were found in superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), malondialdehyde (MDA), noradrenaline (NE), dopamine (DA) after fetal brains were assayed.
  • “Through this study, we concluded that receiving a certain period of microwave radiation from cellular phones during pregnancy has certain harm on fetal rat brains.”

Júnior LC, Guimarães ED, Musso CM, Stabler CT, Garcia RM, Mourão-Júnior CA, Andreazzi AE. (2014). Behavior and memory evaluation of Wistar rats exposed to 1·8 GHz radiofrequency electromagnetic radiation. Neurol Res. 36(1).

  • Frequency of rearing was increased by 193.3%, revealing an increase in exploratory activity of the animals, which is also related to anxiety, depression, and stressful behavior.
  • Our data corroborate that reported by Narayanan et al., 21 who showed in 2012 that animals exposed to mobile phone radiation had an increased frequency of rearing.

Naziroğlu M. and Gumral. (2009). Modulator effects of L-carnitine and selenium on wireless devices (2.45 GHz)-induced oxidative stress and electroencephalography records in brain of rat. Int J Radiat Biol. 85(8), 680-689.

  • Rats exposed to 2.45 GHz 60 min/day for 28 days had lower cortex brain vitamin A (p < 0.05), vitamin C (p < 0.01) and vitamin E (p < 0.05) concentrations.

Nittby H, Brun A, Eberhardt J, Malmgren L, Persson BR, Salford LG. (2010). Effects of microwave radiation upon the mammalian blood-brain barrier. European Journal of Oncology. 5, 333-355.

  • EMF radiation leads to increased permeability of the Blood Brain Barrier (BBB) at non-thermal exposure levels.
  • Damaging effects from radiofrequency EMF upon neurons has been shown after 28 days and 50 days.
  • “The human BBB is very similar to the rodent BBB… it is our sincere belief, that it is more probable than unlikely, that non-thermal EMF from mobile phones and base stations do have effects upon the human brain.

Odaci E, Bas O, Kaplan S. (2008). Effects of prenatal exposure to a 900 megahertz electromagnetic field on the dentate gyrus of rats: a stereological and histopathological study. Brain Research. 1238, 224–229.

  • Prenatal exposure caused a progressive postnatal decline in the number of granule cells of dentate gyrus of the hippocampus of offspring.

Qiao S, Peng R, Yan H, Gao Y, Wang C, et al. (2014) Reduction of Phosphorylated Synapsin I (Ser-553) Leads to Spatial Memory Impairment by Attenuating GABA Release after Microwave Exposure in Wistar Rats. PLoS ONE. 9(4)

  • In the rat experiments, there was a decrease in spatial memory performance after microwave exposure. Both microwave exposure and p-Syn I silencing reduced GABA release and maximal reduction was found for the combination of the two, indicating a synergetic effect.
  • p-Syn I (ser-553) was found to play a key role in the impaired GABA release and cognitive dysfunction that was induced by microwave exposure.

Razavinasab M, Moazzami K, Shabani M. (2014). Maternal mobile phone exposure alters intrinsic electrophysiological properties of CA1 pyramidal neurons in rat offspring. Toxicol Ind Health. 30(2), 101-196.

  • Mobile phone exposure was mostly associated with a decrease in the number of action potentials fired in spontaneous activity and in response to current injection in both male and female groups. There was an increase in the amplitude of the afterhyperpolarization (AHP) in mobile phone rats compared with the control.
  • The results of the passive avoidance and Morris water maze assessment of learning and memory performance showed that phone exposure significantly altered learning acquisition and memory retention in male and female rats compared with the control rats.
  • Our results suggest that exposure to mobile phones adversely affects the cognitive performance of both female and male offspring rats using behavioral and electrophysiological techniques.

Redmayne M, Johansson O. (2014) Could myelin damage from radiofrequency electromagnetic field exposure help explain the functional impairment electrohypersensitivity? A review of the evidence. J Toxicol Environ Health B Crit Rev;17(5):247-58.

  • “This review of RF-EMF peer-reviewed literature outlines the development of myelin through life, and then considers the evidence for an association between myelin integrity and exposure to low-intensity radiofrequency electromagnetic fields (RF-EMFs) typical in the modern world.
  • There are surprisingly little data available in each area, but considered together a picture begins to emerge in RF-EMF-exposed cases: (1) significant morphological lesions in the myelin sheath of rats; (2) a greater risk of multiple sclerosis in a study subgroup; (3) effects in proteins related to myelin production; and (4) physical symptoms in individuals with functional impairment electrohypersensitivity, many of which are the same as if myelin were affected by RF-EMF exposure, giving rise to symptoms of demyelination.In the latter, there are exceptions; headache is common only in electrohypersensitivity, while ataxia is typical of demyelination but infrequently found in the former group.
  • Overall, evidence from in vivo and in vitro and epidemiological studies suggests an association between RF-EMF exposure and either myelin deterioration or a direct impact on neuronal conduction, which may account for many electrohypersensitivity symptoms. The most vulnerable are likely to be those in utero through to at least mid-teen years, as well as ill and elderly individuals.

Saikhedkar N, Bhatnagar M, Jain A, Sukhwal P, Sharma C, Jaiswal N. (2014). Effects of mobile phone radiation (900 MHz radiofrequency) on structure and functions of rat brain. Neurol Res. 2(6), 2499-2504.

  • Thus our findings indicate extensive neurodegeneration on exposure to radio waves. Increased production of reactive oxygen species due to exhaustion of enzymatic and non-enzymatic antioxidants and increased lipid peroxidation are indicating extensive neurodegeneration in selective areas of CA1, CA3, DG, and cerebral cortex. This extensive neuronal damage results in alterations in behavior related to memory and learning.

Sirav B, Seyhan N. (2011). Effects of radiofrequency radiation exposure on blood-brain barrier permeability in male and female rats. Electromagnetic Biology and Medicine. 30(4), 253-60.

  • A significant increase in albumin was found in the brains of the RF-exposed male rats when compared to sham-exposed male brains.
  • Radio frequency radiation “at levels below the international limits can affect the vascular permeability in the brain of male rats. The possible risk of RFR exposure in humans is a major concern for the society.”

Volkow ND, Tomasi D, Wang GJ, Vaska P, Fowler JS, Telang F, Alexoff D, Logan J, Wong C. (2011). Effects of cell phone radiofrequency signal exposure on brain glucose metabolism. Journal of the American Medical Association, 305(8), 808-13.

  • A 50-minute cell phone exposure was associated with increased brain glucose metabolism in the region closest to the antenna.

 

Source:  http://ehtrust.org/science/read-the-research/

Studies showing Neurotoxic Effects/Neurological Impacts

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