Unknown authors · 2024
Researchers studied the content of biogenic amines, their precursors, and derivatives in the prefrontal cortex of male Wistar rats exposed to chronic low-intensity electromagnetic fields from a Wi-Fi device during early postnatal development. Changes in dopamine, serotonin, their precursors, and metabolites were established in the prefrontal cortex. These changes determine the development of neurotransmitter disorders in the central nervous system and subsequently behavioral disorders, deterioration of social adaptation, and cognitive abilities.
Unknown authors · 2024
Unknown authors · 2024
The study found no consolidated disruption in sleep structure. It is the first to show that some sleep parameters seem to have a certain sensitivity to chronic but not acute RF-EMF exposure in preterm newborns. The authors call for further studies to confirm the results and examine possible mid- to long-term sleep-related cardiorespiratory and neurodevelopmental outcomes.
Panagopoulos DJ · 2024
The author previously reported chromosomal damage in human peripheral blood lymphocytes induced by mobile telephony EMFs, a high caffeine dose, and their combination. Human lymphocytes exposed to gamma radiation at 0.1, 0.3, or 0.5 Gy showed more aberrations than those exposed to MT EMFs or high caffeine dose in a dose-dependent manner. Pre-exposure to a single 15-minute MT EMF exposure before gamma radiation increased aberrations significantly more than the sum of individual stressors in all subjects.
Unknown authors · 2024
The study investigated the effects of 1850 MHz RF-EMF exposure at a specific absorption rate of 4.0 W/kg on cortical neurons in mice at postnatal day 28. Daily exposure for 4 weeks significantly reduced the number of mushroom-shaped dendritic spines in the prefrontal cortex. Prolonged exposure over 9 days gradually decreased postsynaptic density 95 puncta and inhibited neurite outgrowth in developing cortical neurons. Expression levels of genes associated with synapse formation, such as synaptic cell adhesion molecules and cyclin-dependent kinase 5, were reduced in the cerebral cortexes of exposed mice. Behavioral assessments using the Morris water maze revealed altered spatial learning and memory after the 4-week exposure period.
Unknown authors · 2024
Researchers exposed zebrafish embryos to mobile phone radiation at 1800 MHz and 1.13 W/kg for 1 hour daily over 5 days, starting at 1, 6, or 24 hours post-fertilization. No significant changes were observed in survival rate, morphology, oxidative stress, or cortisol levels across any exposure group. However, embryos exposed from 1 hour post-fertilization showed statistically significant reductions in distance travelled and increased yolk sac area compared to controls.
Unknown authors · 2023
The review examines experimental, epidemiological, and clinical evidence on biological impacts of wireless technology on children. The review reports that more than half of toddlers regularly use screens contrary to pediatric guidelines, and that early device use is linked to speech delays, technoference, and addiction-like behaviors. The authors recommend an ALARA approach for microwave radiation and an independently funded research program on long-term physical and psychological impacts.
Zhao W, Dong L, Tian L, Zhao L, Zhao Y, Zheng Y · 2023
Unknown authors · 2023
Unknown authors · 2023
Schneider WT, Holland RA, Keišs O, Lindecke O · 2023
Researchers investigated how an altered magnetic field at sunset changes the nocturnal orientation of Pipistrellus pygmaeus by exposing bats to the natural magnetic field, a 120° horizontal shift, or the same shift combined with a reversal of inclination from 70° to −70°. Bats exposed to the 120° shift oriented unimodally northward, while controls showed a bimodal north–south distribution. Bats exposed to both the 120° shift and reversed inclination showed orientation indistinguishable from a uniform distribution. The results suggest that migratory bats calibrate the magnetic field at sunset and are sensitive to the angle of magnetic inclination.
Unknown authors · 2023
Researchers introduced a mathematical model and experimental tool to analyze memory performance in 65 young healthy subjects. Working memory was assessed using the Sternberg test while one subgroup received a ~0.1 μT audio frequency magnetic stimulus applied to both sides of the head near the temporal–parietal area and the other subgroup received a sham stimulus. The model revealed deterioration of working memory that could affect 32% of its operability.
Unknown authors · 2023
Researchers evaluated ELF-EMS at 13.5 mT/60 Hz in a rodent model of global transient stroke, measuring neurological outcome, behavior, neuronal survival, and glial reactivity. ELF-EMS improved neurological scores and behavior in the ischemia-reperfusion model. The treatment also improved neuronal survival and decreased glial reactivity in the hippocampus, with microglia showing the first signs of treatment effect. In vitro, ELF-EMS decreased LPS and ATP-induced microglia migration in scratch and transwell assays. In hippocampal brain slices, ELF-EMS reduced microglial reactivity, improved neuronal survival, and modulated inflammation-related markers.
Unknown authors · 2023
The EPG transgene was expressed in inhibitory interneurons under the hDlx promoter. Kainic acid was used to induce acute seizures. In vivo electrophysiological signals were recorded. hDlx EPG rats exhibited a significant delay in the onset of first seizure and significantly fewer seizures than controls.
Unknown authors · 2023
Thirty-six Sprague–Dawley rats were randomly divided into sham, control, and PEMFs groups, and the sciatic nerves were transected in the sham and PEMFs groups. One month later the nerve ends were reconnected in those two groups. At 4 and 8 weeks the PEMFs group showed higher sciatic functional indices, more distally regenerated axons, and larger fiber diameters compared with the sham group. Axon diameters and myelin thicknesses did not differ between groups, while BDNF and VEGF expression was higher in the PEMFs group at 8 weeks and semi-quantitative analysis revealed more BDNF, VEGF, and NF200. The authors concluded that PEMFs affect axonal regeneration after delayed repair and that upregulated BDNF and VEGF may be involved.
Unknown authors · 2023
Researchers exposed fruit flies to a magnetic field of 0.4-0.6 mT and found it extended lifespan under starvation in wild-type flies but not in cryptochrome mutants. The same exposure increased motor function in both wild-type and neurodegenerative disease model flies. Magnetic field exposure also improved night-time sleep quality in wild-type flies but not in cry<sup>b</sup> mutants. Repeated AC magnetic field exposure increased climbing activity in wild-type Drosophila but not in cry<sup>b</sup> mutants.
Unknown authors · 2023
Unknown authors · 2023
Researchers placed juvenile lumpfish in an artificial magnetic field gradient generated by a Helmholtz coil system at 230 µT for 30 minutes. Swimming speed decreased by 16% when the field was on, but overall activity and distance travelled did not change. The authors concluded that such a speed reduction near HVDC cables is unlikely to significantly affect lumpfish migration or homing.
Unknown authors · 2023
Researchers exposed adult male Wistar rats to 50 Hz extremely low-frequency magnetic fields at 1, 1.5, and 2 mT for 4 hours per day, 5 days per week for 30 days. The study found that different exposure levels caused increases in calcium levels and apoptosis in the rat brain. As the magnetic field strength increased, apoptosis and calcium levels in brain tissues also increased. The researchers concluded that the exposure caused neurodegeneration, increased apoptosis, and increased calcium concentration.
Unknown authors · 2023
Researchers tested magnetic field effects on 97,658 flies in a two-arm maze and 10,960 flies in negative geotaxis assays. Under meticulously controlled conditions with vast sample sizes, they found no evidence for magnetically sensitive behaviour in Drosophila. They suggest many or all previous positive results were false positives after reassessing statistical approaches and sample sizes. The findings cast doubt on magnetic sensing in Drosophila and support songbirds as the model for light-dependent magnetoreception.
Unknown authors · 2023
Researchers assessed the effect of electromagnetic fields on honeybee pollination efficiency using field and laboratory experiments. They measured gene and protein expression in stress and behavioral pathways, and evaluated honeybee behavior and seed production in California poppy. EMF exposure caused strong physiological stress in honeybees, reduced honeybee visits and seed production in nearby poppies, and showed a hump-shaped relationship with plant community richness and abundance.
Guo et al. · 2023
Researchers exposed zebrafish embryos at 3 hours post-fertilization to a 50-Hz magnetic field at intensities of 100, 200, 400, and 800 μT for 1 hour or 24 hours daily over 5 days. Magnetic field exposure did not affect basic development parameters including hatching rate, mortality, and malformation rate. Exposure to 200 μT magnetic field significantly induced spontaneous movement hypoactivity in zebrafish larvae. Histological examination revealed brain morphological abnormalities including condensed cell nucleus and cytoplasm and increased intercellular space. Exposure to 200 μT magnetic field inhibited syn2a transcription and expression and increased reactive oxygen species levels.
Unknown authors · 2023
Researchers divided 20 Albino-Wistar pregnant rats into EMF and control groups and selected 12 male fetuses after delivery. They assessed body growth at delivery, 21 days, and 56 days using crown-rump length, measured BDNF with an ELISA kit, and recorded body weight with a digital scale. EMF exposure blocked body growth and remarkably decreased BDNF levels in the exposed offspring compared to controls.
Unknown authors · 2023
Researchers exposed pregnant rats to 5G EMF at 3500 MHz continuous wave with a whole-body SAR of 0.07 W/kg for 22 hours per day from gestational day 8 to postnatal day 21. Both male and female pups showed delayed incisor eruption by one day in the exposed group compared to sham controls. In adolescent open-field testing, exposed females exhibited 70% fewer stereotyped movements while exposed males exhibited 50% more stereotyped movements than sham-exposed rats.
Zhi W et al. · 2023
Researchers exposed APP/PS1 and wild-type mice to 900 MHz microwave radiation for 270 days at a SAR of 0.25-1.055 W/kg, 2 hours per day. Cognitive tests showed improved spatial and working memory in the exposed AD mice compared with sham-exposed controls. Microwave exposure did not cause Aβ plaques in wild-type mice but reduced Aβ accumulation in the cortex and hippocampus of APP/PS1 mice.
