Lv B, Su C, Yang L, Xie Y, Wu T · 2014
Researchers recruited ten subjects for a crossover, double-blind experiment with real and sham LTE EMF exposure sessions. Each session involved 30 minutes of LTE EMF exposure (power on or off) while EEG signals were recorded from 32 channels. The study found that short-term LTE EMF exposure modulated synchronization patterns of EEG activation across the whole brain.
Movvahedi MM et al. · 2014
Researchers enrolled 60 elementary school children aged 8 to 10 years in Shiraz, Iran. They used standardized computer-based tests of visual reaction time and short-term memory modified for children. Each test was repeated ten times in both real and sham exposure phases with a 30 min interval between phases. After a 10 min talk period, mean short-term memory scores were higher than after sham exposure (P = 0.030). Mean reaction times did not differ significantly between talk and sham exposure (P = 0.629).
Seckin E et al. · 2014
Pregnant rats and their offspring were exposed to 900 MHz and 1800 MHz Global System for Mobile Communications radiofrequency radiation for one hour per day during pregnancy and for 21 days after birth. Distortion product otoacoustic emission tests showed no significant difference among the groups. Electron microscopy revealed significant differences in the numbers of normal, apoptotic, and necrotic cells among the groups. The findings indicated cellular structural damage in the cochlea caused by radiofrequency radiation exposure during cochlear development.
Marzook EA, Abd El Moneim AE, Elhadary AA. · 2014
Triglycerides and testosterone increased significantly in all exposed groups, with a dose-dependent rise in the sesame oil groups. Superoxide dismutase and catalase activities decreased in exposed rats but increased with higher sesame oil doses. Total cholesterol decreased only in rats receiving 3 ml of sesame oil, and glutathione reductase rose significantly in that group. High-density and low-density lipoprotein cholesterol changed in opposite directions between the exposed and sesame oil groups.
Tök L, Nazıroğlu M, Doğan S, Kahya MC, Tök O. · 2014
Thirty-two rats were randomly assigned to four groups, with one group exposed to Wi-Fi at 2.45 GHz for 60 minutes daily over 30 days and another group receiving melatonin during the same exposure. Lipid peroxidation was slightly higher in the Wi-Fi group than in controls, and glutathione peroxidase activity was significantly lower in the Wi-Fi group. Melatonin supplementation significantly decreased lipid peroxidation and increased both glutathione peroxidase activity and reduced glutathione levels compared with the Wi-Fi group.
Jovanovic D, Bragard G, Picard D, Chauvin S. · 2014
Researchers used three 3G HSPA smartphones from different manufacturers to make 220 two-minute calls on a national mobile network in Paris between 28 July and 04 August 2011. The SYRPOM measuring equipment recorded radiation power levels and frequency bands at a sampling rate of 20,000 per second. The mean normalized power was 0.75% of maximum for 3G VoIP calls and 0.22% for 3G VoCS calls. The very low average power levels indicate that RF exposure from 3G devices with VoIP or VoCS is far from exceeding the basic restrictions of current SAR exposure limits.
Marzook EA, Abd El Moneim AE, Elhadary AA · 2014
Exposure raised triglycerides and testosterone significantly in all groups, with oil groups showing dose-dependent increases. Exposed rats had significantly lower SOD and CAT activities than controls, while sesame oil groups showed dose-dependent increases in these enzymes. Total cholesterol decreased significantly only in the 3 ml sesame oil group, which also showed significantly elevated GSH-Rx. HDL-c and LDL-c changed in opposite directions between exposed and sesame oil groups.
Tök L, Nazıroğlu M, Doğan S, Kahya MC, Tök O. · 2014
Turkish researchers exposed rats to Wi-Fi radiation (2.45 GHz) for one hour daily over 30 days and found it caused oxidative stress in the eye lens, similar to cellular damage from aging or toxins. When rats were given melatonin supplements, the antioxidant significantly reduced this Wi-Fi-induced damage. This suggests that common Wi-Fi exposure may harm delicate eye tissues, but natural protective compounds could help defend against such effects.
Curcio G, Mazzucchi E, Marca GD, Vollono C, Rossini PM · 2014
Italian researchers exposed 12 epilepsy patients to cell phone radiation (902.4 MHz GSM signal) for 45 minutes to see if it affected their brain's electrical activity and seizure patterns. They found that the radiation actually reduced seizure-related brain spikes slightly and caused some changes in brain wave patterns, but concluded these effects had no clinical significance for the patients' epilepsy management.
Kang KA et al. · 2014
Researchers exposed U87, PC12, and SH-SY5Y neuronal cells to combined radiofrequency radiation at 837 MHz CDMA and 1950 MHz WCDMA with a specific absorption rate of 2 W/kg each for 2 hours. They also tested co-exposure with hydrogen peroxide or menadione and measured intracellular reactive oxygen species using flow cytometry with a fluorescent probe. Combined RF radiation alone did not consistently affect ROS levels in a time-dependent manner, and co-exposure with hydrogen peroxide or menadione showed no statistically significant change compared to the chemicals alone.
Klose M et al. · 2014
Female Wistar rats from 14 days to 19 months were exposed in the head region for 2 hours per day, 5 days per week to a GSM-modulated 900 MHz field at SAR values of 0, 0.7, 2.5, and 10 W/kg. Four behavioral and learning tests (rotarod, Morris water maze, 8-arm radial maze, open field) were performed three times in juvenile, adult, and presenile rats. No profound differences were identified between exposure groups, though rotarod data showed significantly longer holding times for sham-exposed rats on some days, but these findings were not consistent. The results do not indicate harmful effects of long-term RF-EMF exposure begun at an early age on development, learning, and behavior, even at relatively high SAR values.
Aslan A et al. · 2014
The study used 30 Wistar albino rats divided into two equal groups with tibial fractures fixed by K-wire. One group was exposed to 1800 MHz electromagnetic fields for 30 minutes daily, five days a week, while the other group was not exposed. Radiological, histological, and mechanical scores showed no significant differences between groups, and all scores were lower than controls. The researchers concluded that 1800 MHz electromagnetic radiation from cellular phones has no effect on bone fracture healing.
Rougier C, Prorot A, Chazal P, Leveque P, Leprat P · 2014
Researchers investigated the effects of 2.45 GHz microwave exposure on Escherichia coli cell membranes while maintaining the suspension at an average temperature of 37°C. No effect was detected with conventional heating or 200 W exposure, but membrane integrity was slightly altered at powers from 400 to 2000 W. Thermal characterization indicated the temperature reached was not high enough to explain the membrane changes, suggesting a power-dependent electromagnetic threshold effect. Exposures were discontinuous to keep the average temperature at 37°C, and effects were measured using flow cytometry with propidium iodide staining and intracellular protein release.
Salunke BP, Umathe SN, Chavan JG · 2014
Researchers exposed mice to 2.45 GHz electromagnetic radiation (the same frequency used by Bluetooth devices) for up to 120 days to see if it would cause anxiety, obsessive-compulsive behaviors, or depression. The study found no behavioral changes in the mice at any time point, suggesting this level of EMF exposure did not affect their mental state or behavior patterns.
The animals were exposed to an access point (AP) from WIFI device (D-Link DWL-3200 AP with 802.11 g mode and WPA2 network protection) as previously described in Salah et al. et al. · 2013
Atasoy HI, Gunal MY, Atasoy P, Elgun S, Bugdayci G. · 2013
Researchers exposed young male rats to Wi-Fi radiation (2.4 GHz) continuously for 20 weeks and found significant DNA damage in their reproductive organs. The Wi-Fi exposure also reduced the activity of key antioxidant enzymes that normally protect cells from damage. These findings suggest that prolonged Wi-Fi exposure during development could potentially harm reproductive health and fertility.
Ozorak A et al. · 2013
Kidney and testis samples were collected from decapitated rats during the fourth, fifth, and sixth weeks. In the fourth week, lipid peroxidation in kidney and testis and copper, zinc, GSH, GSH-Px, and TAS in kidney decreased, while iron in kidney and vitamin A and vitamin E in testis increased in exposed groups. In the fifth week, iron, vitamin A, and β-carotene in kidney increased, while GSH and TAS decreased in exposed groups. In the sixth week, iron concentrations in kidney and lipid peroxidation in kidney and testis increased, while copper, TAS, and GSH concentrations decreased in exposed groups.
Lauer O et al. · 2013
The authors presented a framework that combines near-field and far-field radio frequency electromagnetic exposure sources to calculate average organ and whole-body specific absorption rates. Numerically derived SARs for whole-body and individual organs were combined with realistic exposure data collected using personal exposure meters during the Swiss Qualifex study. For users of GSM 900 or GSM 1800 phones, the 24-hour whole-body averaged exposure was dominated by the user's own mobile phone. If only UMTS phones were used, the average exposure level would be lower due to the lower average output power of UMTS phones. The data indicate the necessity of collecting band-selective exposure data in epidemiological studies of electromagnetic fields.
Shahin S et al. · 2013
Twelve-week-old female mice were exposed to 2.45 GHz microwave radiation for 2 hours per day for 45 days to study effects on implantation and pregnancy. Implantation sites were significantly affected in the microwave-irradiated mice compared to controls. The researchers concluded that low-level microwave irradiation-induced oxidative stress suppresses implantation and may also lead to deformity of the embryo if pregnancy continues.
Shahin S et al. · 2013
Researchers exposed female mice to 2.45 GHz microwave radiation (the same frequency used by WiFi and microwave ovens) for 2 hours daily over 45 days, using power levels far below current safety standards. The exposed mice showed significantly reduced pregnancy success, increased DNA damage in brain cells, and widespread oxidative stress throughout their bodies. This suggests that even low-level microwave radiation may interfere with reproductive health through cellular damage mechanisms.
Wang H et al. · 2013
Researchers exposed 100 Wistar rats to a 2.856 GHz pulsed microwave field at average power densities of 0, 5, 10, and 50 mW/cm² for 6 minutes. Rats exposed to 10 or 50 mW/cm² showed significant deficits in spatial learning and memory at 6 hours, 1 day, and 3 days after exposure. At the 5 mW/cm² level, exposed rats showed no difference compared with the sham group. The study suggested that impairment of LTP induction and damages of hippocampal structure, especially changes of synapses, might contribute to cognitive impairment after microwave exposure.
Wang H et al. · 2013
Researchers exposed rats to microwave radiation at cell phone levels and tested their memory abilities. Exposure at 10 and 50 mW/cm² significantly impaired spatial learning and memory while damaging brain cells in the hippocampus, revealing how wireless radiation can disrupt memory formation.
Bilgici B, Akar A, Avci B, Tuncel OK · 2013
Researchers exposed rats to a 900 MHz electromagnetic field at a whole body average specific absorption rate of 1.08 W/kg for 1 hour per day for 3 weeks. Malondialdehyde and advanced oxidation protein product levels increased in rat brain tissue after electromagnetic field exposure. Nitric oxide levels in the brain showed no significant difference, but serum nitric oxide increased significantly after exposure, and garlic did not reduce that increase. The researchers also tested orally administered garlic powder at 500 mg/kg/day and found it had a protective effect against the oxidative stress seen in brain tissue.
Burlaka A et al. · 2013
Researchers exposed Japanese quail embryos in ovo to GSM 900 MHz radiofrequency radiation at 0.25 µW/cm2 for 158 to 360 hours on a discontinuous schedule. The exposure produced a significant persistent overproduction of superoxide and nitrogen oxide in embryo cells throughout the analysis period. Exposed embryo cells also showed significantly increased levels of TBARS and 8-oxo-dG alongside significantly decreased superoxide dismutase and catalase activities.
Burlaka A et al. · 2013
Researchers exposed developing quail embryos to extremely low-level cell phone radiation (900 MHz GSM) at power levels 4,000 times weaker than current safety limits. The exposure caused persistent overproduction of harmful free radicals and direct DNA damage in the developing embryos. The study demonstrates that even very weak radiofrequency radiation can trigger oxidative stress and genetic damage during critical developmental periods.
