Effect of high SARs produced by cell phone like radiofrequency fields on mollusk single neuron

Partsvania, Besarion; Sulaberidze, Tamaz; Shoshiashvili, L.

doi:10.3109/15368378.2012.701190

Cited by 8 publications

(6 citation statements)

References 15 publications

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“…The effects of radiofrequency electromagnetic radiation (RF-EMR) on biological systems depend both on the power and frequency of radiation (IARC 2011). Biological effects of RF-EMR have been studied in various model organisms by several researchers (Finnie et al 2002;Aksoy et al 2005;Chavdoula et al 2010;Partsvania et al 2013). Nevertheless, until today studies have not been able to categorically prove whether RF-EMR exposure is harmful to humans or not.…”

Section: Introductionmentioning

confidence: 98%

Possible cause for altered spatial cognition of prepubescent rats exposed to chronic radiofrequency electromagnetic radiation

et al. 2015

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The effects of chronic and repeated radiofrequency electromagnetic radiation (RFEMR) exposure on spatial cognition and hippocampal architecture were investigated in prepubescent rats. Four weeks old male Wistar rats were exposed to RF-EMR (900 MHz; SAR-1.15 W/kg with peak power density of 146.60 μW/cm(2)) for 1 h/day, for 28 days. Followed by this, spatial cognition was evaluated by Morris water maze test. To evaluate the hippocampal morphology; H&E staining, cresyl violet staining, and Golgi-Cox staining were performed on hippocampal sections. CA3 pyramidal neuron morphology and surviving neuron count (in CA3 region) were studied using H&E and cresyl violet stained sections. Dendritic arborization pattern of CA3 pyramidal neuron was investigated by concentric circle method. Progressive learning abilities were found to be decreased in RF-EMR exposed rats. Memory retention test performed 24 h after the last training revealed minor spatial memory deficit in RF-EMR exposed group. However, RF-EMR exposed rats exhibited poor spatial memory retention when tested 48 h after the final trial. Hirano bodies and Granulovacuolar bodies were absent in the CA3 pyramidal neurons of different groups studied. Nevertheless, RF-EMR exposure affected the viable cell count in dorsal hippocampal CA3 region. RF-EMR exposure influenced dendritic arborization pattern of both apical and basal dendritic trees in RF-EMR exposed rats. Structural changes found in the hippocampus of RF-EMR exposed rats could be one of the possible reasons for altered cognition.

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Section: Introductionmentioning

confidence: 98%

Possible cause for altered spatial cognition of prepubescent rats exposed to chronic radiofrequency electromagnetic radiation

et al. 2015

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“…However, previous studies have documented the capacity of GSM-1800 MHz or 1800 MHz continuous wave (CW) to alter neuronal excitability, albeit with marked differences depending on the experimental approach. Recordings of snail ganglia shortly after an exposure to 1800 MHz CW at a SAR level of 8.2 W/Kg, showed reduction in the threshold for firing action potential and neuronal accommodation (Partsvania et al 2013). On the other hand, spike and bursting activities in primary neuronal cultures derived from rat brain were reduced by exposures to GSM-1800 MHz or 1800 MHz CW applied for 15 minutes at a SAR of 4.6 W/kg.…”

Section: Discussionmentioning

confidence: 99%

Exposure to 1800 MHz LTE electromagnetic fields under proinflammatory conditions decreases the response strength and increases the acoustic threshold of auditory cortical neurons

Souffi

Lameth

Gaucher

et al. 2022

Preprint

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Increased needs in mobile phone communications have raised successive generations (G) of wireless technologies, which could differentially affect biological systems. We have assessed how a single 2h head-only exposure to a 4G long term evolution (LTE)-1800 MHz electromagnetic field (EMF) impacts on the microglial space coverage and the electrophysiological neuronal activity in the primary auditory cortex (ACx) in rats submitted to an acute neuroinflammation induced by lipopolysaccharide. The mean specific absorption rate in the ACx was 0.5 W/kg. Multiunit recording revealed that LTE-EMF triggered reduction in the response strength to pure tones and to natural vocalizations, together with an increase in acoustic threshold in the low and medium frequencies. Iba1 immunohistochemistry showed no change in the area covered by microglia cell bodies and processes. In healthy rats, the same LTE-exposure induced no change in response strength and acoustic threshold. Our data indicate that an acute neuroinflammation sensitize neuronal responses to LTE-EMF, which leads to an altered processing of acoustic stimuli in the ACx.

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“…[20] In a study done on molluscan neuron, the high SARs produced by cell phone-like RF field simulations led to a delay in the cellular mechanism for processing and storage of information. [21] In terms of latency response, this is the first study done to analyze the effect of long-term exposure to mobile phone radiations on the latencies of MLAEP. Further MLAEP studies and brain neuroimaging techniques in a larger study group might provide substantial scientific evidence regarding the effects of the mobile phone radiations on the human auditory system.…”

Section: Discussionmentioning

confidence: 99%

Does the duration of mobile phone usage affect the human auditory system? A middle latency auditory-evoked potential study in young adults

J¹,

Arunkumar²,

Roopakala³

2018

Natl J Physiol Pharm Pharmacol

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Background: Mobile phones emit microwave range of electromagnetic radiations. The human auditory cortex has a greater chance of being affected by these radiations due to the close proximity during usage. Middle latency auditory-evoked potential (MLAEP) recording helps in testing the integrity of the thalamo-cortical pathway of the human auditory system. Aims and Objectives: The aims and objectives are (1) to compare the latencies of MLAEPs in short-and long-term mobile phone users based on years of usage and (2) to compare the latencies of MLAEPs in mobile phone users grouped based on the duration of usage per day. Materials and Methods: MLAEP recording was done in 20 short-and long-term mobile users described as the history of usage of mobile phone less than and more than 1 year, respectively. Further, the group was categorized based on the duration of usage per day. Mean latencies of the MLAEP waves Na, Pa, and Nb were measured and compared statistically using Student's t-test (two tailed, independent) and Mann-Whitney U test. Results: The mean latencies of MLAEP waveforms in both the ears were found to be significantly increased in long-term mobile phone users and in individuals who use mobile phones for more than 1 h per day. Conclusion: The study shows that long-term usage, as well as longer duration of usage of mobile phones, significantly affects the nerve conduction velocity in the thalamo-cortical region of the human auditory pathway.

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Effect of high SARs produced by cell phone like radiofrequency fields on mollusk single neuron

Cited by 8 publications

References 15 publications

Possible cause for altered spatial cognition of prepubescent rats exposed to chronic radiofrequency electromagnetic radiation

Possible cause for altered spatial cognition of prepubescent rats exposed to chronic radiofrequency electromagnetic radiation

Exposure to 1800 MHz LTE electromagnetic fields under proinflammatory conditions decreases the response strength and increases the acoustic threshold of auditory cortical neurons

Does the duration of mobile phone usage affect the human auditory system? A middle latency auditory-evoked potential study in young adults

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