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Type: Journal article
Title: Long-term exposure of Em-Pim1 transgenic mice to 898.4 MHz microwaves does not increase lymphoma incidence
Author: Utteridge, T.
Gebski, V.
Finnie, J.
Vernon-Roberts, B.
Kuchel, T.
Citation: Radiation Research, 2002; 158(3):357-364
Publisher: Radiation Research Soc
Issue Date: 2002
ISSN: 0033-7587
Abstract: A total of 120 E mu-Pim1 heterozygous mice and 120 wild-type mice were exposed for 1 h/day 5 days/week at each of the four exposure levels in "Ferris-wheel" exposure systems for up to 104 weeks to GSM-modulated 898.4 MHz radiation at SARs of 0.25, 1.0, 2.0 and 4.0 W/kg. In addition, 120 heterozygous and 120 wild-type mice were sham-exposed; there was also an unrestrained negative control group. Four exposure levels were used to investigate whether a dose-response effect could be detected. Independent verification confirmed that the exposures in the current study were nonthermal. There was no significant difference in the incidence of lymphomas between exposed and sham-exposed groups at any of the exposure levels. A dose-response effect was not detected. The findings showed that long-term exposures of lymphoma-prone mice to 898.4 MHz GSM radiofrequency (RF) radiation at SARs of 0.25, 1.0, 2.0 and 4.0 W/kg had no significant effects when compared to sham-irradiated animals. A previous study (Repacholi et al., Radiat. Res. 147, 631-640, 1997) reported that long-term exposure of lymphoma-prone mice to one exposure level of 900 MHz RF radiation significantly increased the incidence of non-lymphoblastic lymphomas when compared to sham-irradiated animals.
Keywords: Animals; Mice, Inbred C57BL; Mice, Transgenic; Mice; Mice, Mutant Strains; Lymphoma; Lymphoma, T-Cell; Adenoma; Hemangioendothelioma; Pituitary Neoplasms; Splenic Neoplasms; Bronchial Neoplasms; Neoplasms, Radiation-Induced; Cataract; Hydronephrosis; Glomerulonephritis; Genetic Predisposition to Disease; Weight Loss; Protein-Serine-Threonine Kinases; Proto-Oncogene Proteins; Double-Blind Method; Random Allocation; Environmental Exposure; Dose-Response Relationship, Radiation; Specific Pathogen-Free Organisms; Heterozygote; Microwaves; Time Factors; Female; Proto-Oncogene Proteins c-pim-1; Precursor Cell Lymphoblastic Leukemia-Lymphoma
RMID: 0020020576
DOI: 10.1667/0033-7587(2002)158[0357:LTEOEP]2.0.CO;2
Appears in Collections:Pathology publications

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