Unknown authors · 2023
The study included 40 men from electrical substations, 40 men from cellular communication towers, and 40 men from control sites away from these facilities. Researchers measured oxidative stress markers TOS and MDA, antioxidant markers TAC and GSH, and thyroid hormones TSH, T3, and T4. Both worker groups had significantly elevated TOS and MDA and significantly reduced TAC and GSH, with the most significant alteration in substation workers. Thyroid function was normal in both worker groups, though TSH was significantly higher in substation workers than in the other groups.
Unknown authors · 2023
Researchers exposed Chinese hamster ovary cells to a non-toxic dose of 15-nm gold nanoparticles for 48 hours and then to 900 MHz GSM radiofrequency radiation for 24 hours. The conditioned medium from these cells was transferred to new bystander cells, and cell death, DNA breaks, oxidative stress, and COX-2 expression were measured. RFR increased metabolic death in GNP-treated cells, while colony formation was reduced in bystander cells and RFR-exposed cells regardless of GNP presence. ROS levels were significantly lower in GNP-treated cells, but RFR-induced DNA breaks and micronuclei frequencies were not significantly affected by GNP.
Gurhan H, Barnes F · 2023
Gurhan H, Bajtoš M, Barnes F · 2023
Researchers exposed human fibrosarcoma and fibroblast cells to weak RF magnetic fields in the 3–5 MHz range for four days. At 4.2 MHz, exposure significantly increased mitochondrial mass and oxidative stress in fibrosarcoma cells.
Goudarzi M, Asl JF, Shoghi H · 2023
Unknown authors · 2023
Forty young male Wistar rats were randomly allocated into control, multiple cell phone-exposed, and lipoic acid-treated groups. Exposed rats showed shorter latency to the platform by the fifth day of training but had reduced consolidation of spatial long-term memory. Lipoic acid treatment improved learning and memory, significantly decreasing hippocampal MDA and acetylcholine, increasing glutamate, downregulating Sirt1 and upregulating Atg7.
Díaz-Del Cerro E · 2023
Researchers exposed female old CD1 mice to low-frequency pulsed electromagnetic fields from the NEURALTER® system for 15 minutes daily over four weeks. Behavioral tests and analysis of peritoneal leukocytes showed that treated mice had greater coordination and locomotion, better immune function, and an oxidative-inflammatory state. Direct exposure of leukocytes to the NEURALTER® system also improved their immune function and oxidative state.
Unknown authors · 2023
Male Sprague Dawley rats were divided into four groups: control, RFR exposure, paricalcitol treatment, and combined RFR plus paricalcitol. No significant differences were found in seminiferous tubule diameters or germinal epithelial thicknesses among groups. Ultrastructural changes observed in the seminiferous tubule and Leydig cells in the RFR group were decreased in the RFR plus paricalcitol group. The RFR plus paricalcitol group showed increased Johnsen Score, Ki67, p63 immunoreactivity, SOD and CAT activities, and decreased MDA levels compared with the RFR group.
Unknown authors · 2023
Unknown authors · 2023
Researchers exposed pregnant rats to 900, 1800, and 2100 MHz EMF radiation for 6, 12, or 24 hours per day over 20 days. After birth, six male pups per group were randomly selected for histopathological and biochemical analysis of myocardial tissue. Myocardial damage was greatest in the 2100 MHz 24-hour group, which also had higher MDA and lower GSH levels. At 1800 MHz, the 24-hour exposure group showed greater damage, higher MDA, and lower GSH compared to shorter durations. The authors concluded that myocardial tissue is more affected by long-term high-frequency EMF exposure and raised concerns about 5G technology.
Unknown authors · 2023
Unknown authors · 2023
Fifty-six rats weighing 200–250 g were divided into healthy and diabetic groups, each with sham and radiofrequency radiation exposure at 900, 1800, and 2100 MHz. Over a month, each group spent two hours per day in a Plexiglas carousel, with experimental groups exposed to radiofrequency radiation and sham groups not exposed. Researchers performed three-point bending tests and radiological evaluations on the right tibia bones and measured CAT, GSH, MDA, and IMA in skeletal muscle tissue. Significant differences were found in biomechanical properties, radiological evaluations, and muscle tissue measurements between groups (p < .05). Average whole-body SAR values were 0.026 W/kg for GSM 900 MHz, 0.164 W/kg for 1800 MHz, and 0.173 W/kg for 2100 MHz.
Amiri H, Shabkhiz F, Pournemati P, Quchan AHSK, Fard RZ · 2023
Unknown authors · 2022
Relationship between cell-phone over-use scale with depression et al. · 2022
Researchers conducted a descriptive-analytical cross-sectional study of 212 students using the Cell-phone Over-use Scale and the Depression Anxiety Stress Scale. The sample was predominantly male (72.2%), aged 21–23 years (46.2%), and single (92.5%). Multiple linear regression showed a significant association between cell phone overuse and higher stress (t=2.614, P=0.010) and anxiety (t=2.209, P=0.028), but not depression (t=1.790, P=0.075).
Calderón et al · 2022
Researchers created an algorithm for the MOBI-Kids study to estimate cumulative specific energy from RF fields and cumulative induced current density from ELF fields in the brain of subjects aged 10 to 24 years. The algorithm considered age, tumour location, phone models, usage patterns, and communication system prevalence over time. Median RF and ELF doses were substantially higher for GSM than 3G systems and varied considerably by brain location. Agreement between RF dose estimates and phone use variables was moderate to null depending on communication system, while agreement for ELF dose was higher but also system-dependent. Duration and number of calls may not be adequate proxies for dose as communication systems become more complex over time.
Touitou Y, Selmaoui B, Lambrozo J · 2022
Researchers investigated the effects of ELF-EMFs on cortisol secretion in 14 men working in extra-high voltage substations. Magnetic field exposure was measured over seven days with geometric means ranging from 0.1 to 2.6 μT. Blood samples were taken hourly from 20:00 to 08:00 the next morning. Compared to unexposed controls, higher field intensity had a significant effect on cortisol secretory pattern. This study strongly suggests that chronic exposure to ELF-EMFs alters peak-time serum cortisol levels.
Unknown authors · 2022
Unknown authors · 2022
Unknown authors · 2022
Researchers exposed purified BMSCs to sinusoidal or square waveform electromagnetic fields at 400 µT and 75 Hz for either 1 hour per week or 7 hours per day, then injected them into the left substantia nigra of Parkinsonian rats. Cell morphology analysis showed that sinusoidal EMF exposure caused most BMSCs to differentiate into neurons, including large and small neurons with apparent synapses. Square EMF exposure produced mainly astrocytes, microglia, and oligodendrocytes, while both BMSCs alone and sinusoidal EMF-exposed BMSCs improved locomotor activity in the rats.
Unknown authors · 2022
Unknown authors · 2022
Unknown authors · 2022
The study used a 500 μT, 50 Hz extremely low-frequency electromagnetic field generated by a Meritt Coil System. Malondialdehyde and glutathione levels were measured, showing increased lipid peroxidation and decreased antioxidant response after exposure. Raman spectroscopy of brain tissue revealed a shift in amide III vibration peaks, structural changes in lipid CH2 vibrations in both hemispheres, and an increased number of amide III bonds in the cerebellum and left-brain tissue. Liver tissue from the exposed group showed higher Raman intensities and structural lipid changes. Principal component analysis distinguished the ELF-MF and control groups, and hierarchical component analysis showed tissues from each group clustered with their own group.
Unknown authors · 2022
Researchers tested the behavior of 92 haddock larvae in a raceway tank simulating magnetic fields from a DC subsea cable. The larvae were exposed to a magnetic field intensity ranging from 50 to 150 µT. Exposure did not affect the spatial distribution of larvae in the raceway. Larvae were categorized as nonexploratory (78%) or exploratory (22%) based on their behavior. Exposure reduced median swimming speed by 60% and median acceleration by 38% in nonexploratory larvae, but had no effect on exploratory larvae.
Bouisset N, Villard S, Legros A · 2022
Researchers investigated the effects of ELF-MF and AC vestibular stimulations on verticality perception using a subjective visual vertical paradigm. For similar levels of SVV precision, the ELF-MF condition required more time to adjust SVV and SVV variability was higher with ELF-MF than with AC vestibular-specific stimulations. The differences between AC and ELF-MF stimulations were small.
