Whole Home EMF Research

Blood-brain barrier and electromagnetic fields: Effects of scopolamine methylbromide on working memory after whole-body exposure to 2.45GHz microwaves in rats.

Cosquer B, Vasconcelos AP, Frohlich J, Cassel JC. · 2005

Effects of 2450 MHz electromagnetic fields with a wide range of SARs on methylcholanthrene-induced transformation in C3H10T1/2 cells.

Wang J et al. · 2005

Researchers exposed mouse C3H10T1/2 cells to 2450 MHz HFEMF at SARs of 5 to 200 W/kg for 2 hours, with or without methylcholanthrene (MC) and the tumor promoter TPA. Transformed foci of Type II and Type III were counted as the endpoint. No significant differences were observed in malignant transformation frequency between controls and HFEMF with or without TPA. Transformation frequency increased for HFEMF at SAR above 100 W/kg when combined with MC or MC plus TPA, while heat exposure did not increase transformation.

Subchronic exposure of hsp70.1-deficient mice to radiofrequency radiation.

Lee JS, Huang TQ, Lee JJ, Pack JK, Jang JJ, Seo JS. · 2005

Researchers exposed eight-week-old hsp70.1-deficient mice twice daily for 45 minutes with a 15-minute interval, five days a week for ten weeks at a whole-body average specific absorption rate of 0.4 W/Kg for both 849 MHz and 1763 MHz fields. They examined major tissues histopathologically, assessed cell proliferative activity immunocytochemically, measured apoptosis with a TUNEL assay, and evaluated heat shock protein expression and stress-activated kinase phosphorylation by western blot. No histopathological differences were found between sham- and RF-exposed mice, and there was no evidence of increased proliferative or apoptotic activity. Levels of HSP90, HSP70, and HSP25 showed no obvious changes, and RF exposure did not affect phosphorylation of ERK1/2, JNK1/2, or p38 MAPK.

Histological characteristics of cutaneous and thyroid mast cell populations in male rats exposed to power-frequency electromagnetic fields

Unknown authors · 2005

Researchers exposed two-month-old Wistar male rats to 50 Hz electromagnetic fields at 100-300 microT and 54-160 V/m for 4 h a day, seven days a week for one month. After sacrifice, skin and thyroid samples were processed for toluidine blue staining or indirect immunohistochemistry, and stereological analysis was performed using an M42 grid and a special microscopic frame. The numerical and volume density of intact type A mast cells in the thyroid was significantly higher in the exposed group compared to controls. Mast cells and immunoreactive nerve fibers were observed in the skin, and histamine-immunoreactive mast cells were observed in the thyroid of exposed animals. However, the differences in stereological data were not statistically significant by the Mann-Whitney test.

Histological characteristics of cutaneous and thyroid mast cell populations in male rats exposed to power-frequency electromagnetic fields

Unknown authors · 2005

Serbian researchers exposed male rats to 50 Hz electromagnetic fields (the same frequency as power lines) for 4 hours daily over one month. They found significant increases in specific immune cells called mast cells in the thyroid gland, along with changes to nerve fibers in skin tissue. These cellular changes suggest the body's immune and nervous systems respond to power-frequency EMF exposure.

Effect of radiofrequency radiation exposure on mouse skin tumorigenesis initiated by 7,12-dimethybenz[alpha]anthracene.

Huang TQ, Lee JS, Kim TH, Pack JK, Jang JJ, Seo JS. · 2005

The study used 80 male ICR mice initiated with DMBA and then exposed to 849 MHz or 1,763 MHz RF radiation at 0.4 W/kg SAR for 19 weeks. No skin tumors were observed in the sham or RF-exposed groups, while the TPA positive control group had a 95% tumor incidence. Pathological examination and PCNA staining showed no differences between sham and RF-exposed groups, and cyclin D1 and c-fos expression was only detected in TPA-induced tumors. The researchers concluded that RF radiation does not act as a tumor promoter for skin tumors in this model.

The effect of electromagnetic waves on the growth of Entamoeba histolytica and Entamoeba dispar.

Aksoy U, Sahin S, Ozkoc S, Ergor G. · 2005

Researchers exposed cultures of Entamoeba histolytica and Entamoeba dispar to 900 MHz electromagnetic radiation from a digital mobile phone for 24 hours. The number of living parasites of both species decreased significantly after exposure at 37 °C and at room temperature compared with unexposed controls.

Low dose magnetic fields do not cause oxidative DNA damage in human placental cotyledons in vitro

Unknown authors · 2005

Researchers exposed human placental cotyledons to magnetic fields of 2 mT and 5 mT at 50 Hz for 3 hours in vitro. They measured the concentration of 8-hydroxy-2'-deoxyguanosine (8-OH-dG) in cellular DNA. The results suggest that placental tissues possess a capacity to protect DNA against oxidative alterations from magnetic field intensities that have caused DNA damage in rat brain cells and electrolyte imbalances in cotyledons.

[Effect of 900 MHz electromagnetic fields on the expression of GABA receptor of cerebral cortical neurons in postnatal rats]

Wang Q, Cao ZJ, Bai XT. · 2005

Researchers exposed cerebral cortical neurons from postnatal rats to 900 MHz continuous microwave EMF with a SAR of 1.15 to 3.22 mW/g for 2 hours per day over 6 consecutive days and for 12 hours at one time. GABA receptor was selected as the biological endpoint. Significant changes in GABA receptor expression were observed in exposed neurons (P < 0.01), and the expression was significantly regulated by the microwave with a power window effect.

Pulsed electric field exposure of insulin induces anti-proliferative effects on human hepatocytes

Unknown authors · 2005

Researchers exposed insulin solution to a pulsed electric field of 0.7 V/m at 50 Hz for 20 minutes and then added it to human hepatocyte cultures. They investigated insulin signaling events including ligand-receptor binding, tyrosine phosphorylation, gene transcription, and cell proliferation using multiple methods. PEF exposure caused a conformational change in insulin, reduced its receptor binding capacity to 87% of control, and decreased intracellular tyrosine phosphorylation by 11%. The expression of 55 out of 12000 genes was altered, including increased expression of human tyrosine phosphatase and a small GTP-binding protein.

Pulsed electric field exposure of insulin induces anti-proliferative effects on human hepatocytes

Unknown authors · 2005

Researchers exposed insulin to a pulsed electric field at 50 Hz (0.7 V/m) for 20 minutes, then tested it on human liver cells. The exposed insulin lost effectiveness, binding 13% less effectively to cell receptors and reducing cellular signaling, which led to decreased cell proliferation. This demonstrates that EMF exposure can alter the molecular structure of hormones, potentially disrupting their biological function.

Acute effects of pulsed microwaves and 3-nitropropionic acid on neuronal ultrastructure in the rat caudate-putamen.

Seaman RL, Phelix CF. · 2005

3-NP significantly increased ER intracisternal width, ER area density, and nuclear envelope thickness. Microwave exposure at 6 W/kg alone also significantly increased these measures. Exposure of 3-NP-treated animals at 0.6 W/kg reduced the effects of 3-NP.

Effect of 900Mhz electromagnetic fields on energy metabolism in postnatal rat cerebral cortical neurons

Unknown authors · 2005

Researchers studied the effect of 900MHz low-intensity microwave fields on AMPA GluR2 protein and intracellular calcium in postnatal rat cerebral cortical neurons. Neurons were exposed to continuous 900MHz microwaves at SAR values of 3.22, 2.23, and 1.15 W/kg for 2 hours per day over 4 or 6 consecutive days, and also for 12 hours at 3.22 W/kg. Compared with sham exposure, GluR2 protein was significantly down-regulated and intracellular calcium was significantly up-regulated in the exposed neurons.

Non-thermal DNA breakage by mobile-phone radiation (1800MHz) in human fibroblasts and in transformed GFSH-R17 rat granulosa cells in vitro

Diem E, Schwarz C, Adlkofer F, Jahn O, Rudiger H · 2005

This in vitro study examined whether 1800MHz mobile phone radiation could cause DNA breakage in human fibroblasts and transformed rat granulosa cells through non-thermal mechanisms. The research investigated potential genetic damage from radiofrequency radiation at frequencies used in mobile phone communications.

Electromagnetic fields affect transcript levels of apoptosis-related genes in embryonic stem cell-derived neural progenitor cells.

Nikolova T et al. · 2005

ELF-EMF significantly affected transcript levels of bcl-2, bax, and GADD45 genes but did not affect neural-specific gene mRNA levels. RF-EMF down-regulated neural-specific Nurr1 and up-regulated bax and GADD45 mRNA levels. Short-term RF-EMF exposure for 6 hours caused a transient increase in DNA double-strand breaks, while 48-hour exposure did not. No effects were observed on mitochondrial function, nuclear apoptosis, cell proliferation, or chromosomal alterations.

Frequency of micronucleated erythrocytes in rat bone marrow exposure to 2.45 GHz radiation.

Trosic I, Busljeta I. · 2005

Researchers exposed Wistar rats to 2.45 GHz continuous RF/MW radiation for 2 hours daily, 7 days a week, at 5–10 mW/cm², with subgroups receiving 4, 16, 30, and 60 total hours of exposure. The frequency of micronucleated bone marrow erythrocytes was significantly increased after 15 irradiation treatments. No statistically significant differences in micronucleus frequency were observed after 2, 8, or 30 irradiation treatments.

Non-thermal DNA breakage by mobile-phone radiation (1800MHz) in human fibroblasts and in transformed GFSH-R17 rat granulosa cells in vitro.

Diem E, Schwarz C, Adlkofer F, Jahn O, Rudiger H. · 2005

Researchers exposed cultured human diploid fibroblasts and transformed GFSH-R17 rat granulosa cells to 1800 MHz RF-EMF at SAR levels of 1.2 or 2 W/kg, using both intermittent and continuous exposures. DNA strand breaks were determined by means of the alkaline and neutral comet assay. Effects occurred after 16 h exposure in both cell types, and intermittent exposure showed a stronger effect in the comet assay than continuous exposure. The researchers concluded that the induced DNA damage cannot be based on thermal effects.

Individual responsiveness to induction of micronuclei in human lymphocytes after exposure in vitro to 1800-MHz microwave radiation.

Zotti-Martelli L et al. · 2005

Researchers exposed whole blood samples from nine healthy donors to continuous 1800-MHz microwave radiation at power densities of 5, 10 and 20 mW/cm2 for 60, 120 and 180 minutes, measuring genotoxic effects using the micronucleus assay. A statistically significant but rather low increase in micronuclei was observed depending on exposure time and applied power density. Both spontaneous and induced micronuclei frequencies varied significantly among donors, and the experiment was repeated three months later to test reproducibility.

Studying the synergistic damage effects induced by 1.8 GHz radiofrequency field radiation (RFR) with four chemical mutagens on human lymphocyte DNA using comet assay in vitro.

Baohong Wang et al. · 2005

Researchers studied whether 1.8 GHz radiofrequency field radiation (RFR) at a SAR of 3 W/kg could interact with four chemical mutagens to damage DNA in human lymphocytes in vitro. DNA damage was detected using comet assay at two incubation times after treatment. RFR alone showed no difference in DNA damage compared to the control group, but co-exposure with MMC or 4NQO produced significantly greater DNA damage than those chemicals alone. Co-exposure with bleomycin or methyl methanesulfonate did not significantly increase DNA damage compared with those chemicals alone.

50-Hz extremely low frequency electromagnetic fields enhance cell proliferation and DNA damage: possible involvement of a redox mechanism.

Wolf FI et al. · 2005

Researchers exposed HL-60 leukemia cells, Rat-1 fibroblasts, and WI-38 diploid fibroblasts to 0.5–1.0-mT 50-Hz extremely low frequency electromagnetic fields for 24–72 hours. The treatment produced a dose-dependent increase in cell proliferation, with about a 30% increase after 72 hours of exposure to 1.0 mT. A dose-dependent increase in DNA damage was observed in all cell lines, with two peaks occurring at 24 and 72 hours. Both effects were prevented by pretreatment with α-tocopherol, suggesting that redox reactions were involved.

Studying the synergistic damage effects induced by 1.8GHz radiofrequency field radiation (RFR) with four chemical mutagens on human lymphocyte DNA using comet assay in vitro.

Baohong Wang et al. · 2005

Researchers exposed human immune cells to 1.8 GHz cell phone radiation (the same frequency used by many mobile phones) for 2-3 hours to see if it damages DNA. While the radiation alone didn't harm DNA, it significantly amplified the damage when cells were also exposed to certain toxic chemicals. This suggests cell phone radiation may make our cells more vulnerable to other environmental toxins.

Low-intensity electromagnetic fields induce human cryptochrome to modulate intracellular reactive oxygen species

Regoli F et al. · 2005

Genetic damage in mobile phone users: some preliminary findings.

Gandhi G, Anita · 2005

Researchers investigated DNA and chromosomal damage in peripheral blood lymphocytes of 24 mobile phone users exposed to microwave frequencies of 800-2000 MHz. DNA damage measured by comet assay showed a mean comet tail length of 26.76 ± 0.054 mm with 39.75% of cells damaged, which was highly significant compared to controls. The in vivo capillary blood micronucleus test also revealed a highly significant frequency of micronucleated cells at 0.25.

Electromagnetic fields affect transcript levels of apoptosis-related genes in embryonic stem cell-derived neural progenitor cells.

Nikolova T et al. · 2005

German researchers exposed developing brain cells to both power line frequencies (50 Hz) and cell phone frequencies (1.71 GHz) for 6 hours to study genetic effects. They found that both types of electromagnetic fields triggered changes in genes that control cell death and DNA damage responses, though the cells themselves appeared to function normally afterward. This suggests that EMF exposure can activate cellular stress responses even when no obvious harm is visible.

Effect of 900Mhz electromagnetic fields on energy metabolism in postnatal rat cerebral cortical neurons

Unknown authors · 2005

Chinese researchers exposed developing rat brain neurons to 900 MHz microwave radiation (similar to older cell phones) at various power levels for up to 12 hours. The radiation significantly reduced a key brain receptor protein (GluR2) while increasing harmful calcium levels inside neurons. The effects were dose-dependent and classified as non-thermal, meaning they occurred without heating tissue.