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Author  |
Antonini, R.A.; Benfante, R.; Gotti, C.; Moretti, M.; Kuster, N.; Schuderer, J.; Clementi, F.; Fornasari, D. |
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Title |
Extremely low-frequency electromagnetic field (ELF-EMF) does not affect the expression of alpha3, alpha5 and alpha7 nicotinic receptor subunit genes in SH-SY5Y neuroblastoma cell line |
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Journal Article |
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Year |
2006 |
Publication |
Toxicology Letters |
Abbreviated Journal |
Toxicol Lett |
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Volume |
164 |
Issue |
3 |
Pages |
268-277 |
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Keywords |
Bicyclo Compounds, Heterocyclic/pharmacology; Blotting, Northern; Bungarotoxins/pharmacology; Cell Line, Tumor; Electromagnetic Fields/*adverse effects; Gene Expression/*radiation effects; Humans; Nerve Tissue Proteins/*genetics/metabolism; Neuroblastoma/pathology; Pyridines/pharmacology; RNA, Messenger/genetics; Radioligand Assay; Receptors, Nicotinic/*genetics/metabolism |
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Abstract |
Neuronal nicotinic acetylcholine receptors (nAChRs) are involved in a number of functional processes, including cognition, learning and memory, and alterations in their expression and/or activity have been implicated in various neurological disorders such as Alzheimer's disease (AD), Parkinson's disease and schizophrenia. Epidemiological studies have shown that exposure to electromagnetic fields (EMF) may contribute to the pathogenesis of neurodegenerative diseases such as Alzheimer's disease. Given the role of nAChRs in physiological and pathological conditions, we wondered whether an extremely low-frequency electromagnetic field (ELF-EMF) may affect the expression of the molecules involved in neurodegenerative processes. In order to investigate this possibility, we studied the expression of alpha3, alpha5 and alpha7 nicotinic subunits upon exposure of the SH-SY5Y human neuroblastoma cell line to a 50 Hz power-line magnetic field in a “blind trial” system; various magnetic flux densities and exposure times were applied. Our studies show that the expression of some relevant components of the cholinergic nicotinic system, which is one of the most affected neurotransmission systems in AD, did not undergo any change at molecular level by environmental exposure to ELF-EMF. |
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Department of Pharmacology, School of Medicine, University of Milan, via Vanvitelli 32, 20129 Milan, Italy |
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ISSN |
0378-4274 |
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PMID:16513298 |
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Call Number |
ITIS @ murbach @ |
Serial |
163 |
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Author |
Antonopoulos, A.; Eisenbrandt, H.; Obe, G. |
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Title |
Effects of high-frequency electromagnetic fields on human lymphocytes in vitro |
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Journal Article |
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Year |
1997 |
Publication |
Mutation Research |
Abbreviated Journal |
Mutat Res |
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Volume |
395 |
Issue |
2-3 |
Pages |
209-214 |
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Keywords |
*Cell Cycle; Cells, Cultured; Electromagnetic Fields/*adverse effects; Humans; Lymphocytes/cytology/drug effects/*physiology; Phytohemagglutinins/pharmacology; *Sister Chromatid Exchange; Temperature |
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Abstract |
Human peripheral lymphocytes were incubated in the presence of high-frequency electromagnetic fields of 380, 900 and 1800 MHz. The measured endpoints were cell cycle progression and the frequencies of sister-chromatid exchanges. No differences between treated and control cultures could be found. |
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Department of Genetics, University of Essen, Germany |
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0027-5107 |
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PMID:9465932 |
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Call Number |
IT'IS @ evaj @ |
Serial |
278 |
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Author |
Arendash, G.W.; Sanchez-Ramos, J.; Mori, T.; Mamcarz, M.; Lin, X.; Runfeldt, M.; Wang, L.; Zhang, G.; Sava, V.; Tan, J.; Cao, C. |
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Title |
Electromagnetic field treatment protects against and reverses cognitive impairment in Alzheimer's disease mice |
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Journal Article |
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Year |
2010 |
Publication |
Journal of Alzheimer's Disease : JAD |
Abbreviated Journal |
J Alzheimers Dis |
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Volume |
19 |
Issue |
1 |
Pages |
191-210 |
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Keywords |
Alzheimer Disease/complications/psychology/*therapy; Animals; Cognition Disorders/complications/*prevention & control/psychology; *Disease Models, Animal; Electromagnetic Fields; Magnetic Field Therapy/*methods; Mice; Mice, Transgenic |
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Abstract |
Despite numerous studies, there is no definitive evidence that high-frequency electromagnetic field (EMF) exposure is a risk to human health. To the contrary, this report presents the first evidence that long-term EMF exposure directly associated with cell phone use (918 MHz; 0.25 w/kg) provides cognitive benefits. Both cognitive-protective and cognitive-enhancing effects of EMF exposure were discovered for both normal mice and transgenic mice destined to develop Alzheimer's-like cognitive impairment. The cognitive interference task utilized in this study was designed from, and measure-for-measure analogous to, a human cognitive interference task. In Alzheimer's disease mice, long-term EMF exposure reduced brain amyloid-beta (Abeta) deposition through Abeta anti-aggregation actions and increased brain temperature during exposure periods. Several inter-related mechanisms of EMF action are proposed, including increased Abeta clearance from the brains of Alzheimer's disease mice, increased neuronal activity, and increased cerebral blood flow. Although caution should be taken in extrapolating these mouse studies to humans, we conclude that EMF exposure may represent a non-invasive, non-pharmacologic therapeutic against Alzheimer's disease and an effective memory-enhancing approach in general. |
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The Florida Alzheimer's Disease Research Center, Tampa, FL, USA. arendash@cas.usf.edu |
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ISSN |
1387-2877 |
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PMID:20061638 |
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Call Number |
CBM.UAM @ ccobaleda @ |
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471 |
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Author |
Auer, F.; Ruschendorf, F.; Gombert, M.; Husemann, P.; Ginzel, S.; Izraeli, S.; Harit, M.; Weintraub, M.; Weinstein, O.Y.; Lerer, I.; Stepensky, P.; Borkhardt, A.; Hauer, J. |
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Title |
Inherited susceptibility to pre B-ALL caused by germline transmission of PAX5 c.547G>A |
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Journal Article |
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2013 |
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Leukemia |
Abbreviated Journal |
Leukemia |
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Department of Pediatric Oncology, Hematology and Clinical Immunology, Center for Child and Adolescent Health, Heinrich Heine University, Dusseldorf, Germany |
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0887-6924 |
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PMID:24287434 |
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Call Number |
CBM.UAM @ ccobaleda @ |
Serial |
457 |
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Author |
Avdikos, A.; Karkabounas, S.; Metsios, A.; Kostoula, O.; Havelas, K.; Binolis, J.; Verginadis, I.; Hatziaivazis, G.; Simos, I.; Evangelou, A. |
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Title |
Anticancer effects on leiomyosarcoma-bearing Wistar rats after electromagnetic radiation of resonant radiofrequencies |
Type |
Journal Article |
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Year |
2007 |
Publication |
Hellenic Journal of Nuclear Medicine |
Abbreviated Journal |
Hell J Nucl Med |
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Volume |
10 |
Issue |
2 |
Pages |
95-101 |
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Keywords |
Animals; Antineoplastic Agents/*therapeutic use; Aorta/metabolism; Disease Models, Animal; *Electromagnetic Fields; Female; Humans; Leiomyosarcoma/*radiotherapy; Myocytes, Smooth Muscle/metabolism; Neoplasms/metabolism; Radio Waves; Rats; Rats, Wistar; Time Factors; Treatment Outcome |
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Abstract |
In the present study, the effects of a resonant low intensity static electromagnetic field (EMF), causing no thermal effects, on Wistar rats have been investigated. Sarcoma cell lines were isolated from leiomyosarcoma tumors induced in Wistar rats by the subcutaneous (s.c) injection of 3,4-benzopyrene. Furthermore, smooth muscle cells (SMC) were isolated from the aorta of Wistar rats and cultivated. Either leiomyosarcoma cells (LSC) or SMC were used to record a number of characteristic resonant radiofrequencies, in order to determine the specific electromagnetic fingerprint spectrum for each cell line. These spectra were used to compose an appropriate algorithm, which transforms the recorded radiofrequencies to emitted ones. The isolated LSC were cultured and then exposed to a resonant low intensity radiofrequency EMF (RF-EMF), at frequencies between 10 kHz to 120 kHz of the radiowave spectrum. The exposure lasted 45 consecutive minutes daily, for two consecutive days. Three months old female Wistar rats were inoculated with exposed and non-exposed to EMF LSC (4 x 10(6) LCS for animal). Inoculated with non-exposed to EMF cells animals were then randomly separated into three Groups. The first Group was sham exposed to the resonant EMF (control Group-CG), the second Group after the inoculation of LSC and appearance of a palpable tumor mass, was exposed to a non-resonant EMF radiation pattern, for 5 h per day till death of all animals (experimental control Group-ECG). The third Group of animals after inoculation of LSC and the appearance of a palpable tumor mass, was exposed to the resonant EMF radiation for 5 h per day, for a maximum of 60 days (experimental Group-I, EG-I). A fourth Group of animals was inoculated with LSC exposed to EMF irradiation and were not further exposed to irradiation (experimental Group-II, EG-II). Tumor induction was 100% in all Groups studied and all tumors were histologically identified as leiomyosarcomas. In the case of the EG-I, a number of tumors were completely regretted (final tumor induction: 66%). Both Groups of animals inoculated with exposed or non-exposed to the EMF LSC, (EG-I and EG-II, respectively) demonstrated a significant prolongation of the survival time and a lower tumor growth rate, in comparison to the control Group (CG) and the experimental control Group (ECG). However, the survival time of EG-I animals was found to be significantly longer and tumor growth rate significantly lower compared to EG-II animals. In conclusion, our results indicate a specific anticancer effect of resonant EMF irradiation. These results may possibly be attributed to (a) the duration of exposure of LSC and (b) the exposure of the entire animal to this irradiation. |
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Laboratory of Physiology, Unit of Environmental Physiology, Faculty of Medicine, University of Ioannina, Greece |
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ISSN |
1790-5427 |
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PMID:17684584 |
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Call Number |
IT'IS @ evaj @ |
Serial |
280 |
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