Evaluation of the biological effects of police radar RAMER 7F

Rotkovská, D; Moc, J; Kautská, J; Bartonícková, A; Keprtová, J; Hofer, M

doi:10.1289/ehp.93101134

“…Enhanced transformation rates were found in C3H10T1/2 cells exposed to combined amplitude-modulated microwaves (4.4 W/kg) and X-rays followed by treatment with the chemical promoter 12-O-tetradecanoylphorbol-13-acetate (TPA), compared with cells exposed only to X-rays and TPA (35). Rotkovska et al (44) found that exposure of mice to low-level RF fields from a police radar (34 GHz) did not affect biological parameters that could initiate any pathologic process. However, there are inconsistencies between these two studies.…”

Section: Promotion and Progression Studiesmentioning

confidence: 99%

Radiofrequency Field Exposure and Cancer: What Do the Laboratory Studies Suggest?

Repacholi¹

1997

Environmental Health Perspectives

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Significant concern has been raised about possible health effects from exposure to radiofrequency (RF) electromagnetic fields, especially after the rapid introduction of mobile telecommunications systems. Parents are especially concerned with the possibility that children might develop cancer after exposure to the RF emissions from mobile telephone base stations erected in or near schools. These questions have followed scientific reports suggesting that residence near high voltage power lines may to be associated with an increased childhood leukemia risk. Epidemiologic studies have been plagued by poor RF exposure assessment and differences in methodology. There are no high-quality epidemiologic studies that can be used to evaluate health risks from RF exposure. Laboratory studies in this area have been somewhat confusing. Some animal studies suggest that RF fields accelerate the development of sarcoma colonies in the lung, mammary tumors, skin tumors, hepatomas, and sarcomas. A substantial RF-induced increase in lymphoma incidence in transgenic mice exposed for up to 18 months has also been reported. In contrast, other studies have not found carcinogenic effects. These conflicting results indicate the need for more well-conducted studies on laboratory animals, supplemented with high-quality in vitro studies to identify effects that need further research in vivo, and to characterize any acting mechanisms, especially at low RF field levels. This paper provides a review of the laboratory studies and indicates what conclusions about RF-induced cancer can be drawn.

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“…(43) report no effect of RF exposure (2.45 GHz exposed 3 hr/day, 6 days/week for 5 months; average SAR 10-12 W/kg) on chemically induced colon cancer in mice. Rotkovska et al (44) found that exposure of mice to low-level RF fields from a police radar (34 GHz) did not affect biological parameters that could initiate any pathologic process.…”

Section: Promotion and Progression Studiesmentioning

confidence: 99%

Radiofrequency field exposure and cancer: what do the laboratory studies suggest?

Repacholi

¹

1997

Environ Health Perspect

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Significant concern has been raised about possible health effects from exposure to radiofrequency (RF) electromagnetic fields, especially after the rapid introduction of mobile telecommunications systems. Parents are especially concerned with the possibility that children might develop cancer after exposure to the RF emissions from mobile telephone base stations erected in or near schools. These questions have followed scientific reports suggesting that residence near high voltage power lines may to be associated with an increased childhood leukemia risk. Epidemiologic studies have been plagued by poor RF exposure assessment and differences in methodology. There are no high-quality epidemiologic studies that can be used to evaluate health risks from RF exposure. Laboratory studies in this area have been somewhat confusing. Some animal studies suggest that RF fields accelerate the development of sarcoma colonies in the lung, mammary tumors, skin tumors, hepatomas, and sarcomas. A substantial RF-induced increase in lymphoma incidence in transgenic mice exposed for up to 18 months has also been reported. In contrast, other studies have not found carcinogenic effects. These conflicting results indicate the need for more well-conducted studies on laboratory animals, supplemented with high-quality in vitro studies to identify effects that need further research in vivo, and to characterize any acting mechanisms, especially at low RF field levels. This paper provides a review of the laboratory studies and indicates what conclusions about RF-induced cancer can be drawn. Environ Health Perspect 1 05(Suppl 6): 1565-1568 (1997)

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“…Millimeter waves (MMW) comprise energy in the frequency range 30 to 300 GHz of the electromagnetic spectrum. Over the past few decades, biological effects of MMW had only been investigated pertaining to their use in whole-body scanners at airports [1], radar systems (radio astronomy, police and military radar, vehicle collision prevention system) [2], and active denial systems (non-lethal weapons) [3]. Recently, MMW have been gaining more attention with their increasing use in broadband wireless communications.…”

Section: Introductionmentioning

confidence: 99%

Ocular Response to Millimeter Wave Exposure Under Different Levels of Humidity

Kojima

¹

,

Tsai

²

,

Suzuki

³

et al. 2019

J Infrared Milli Terahz Waves

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It is known that millimeter waves (MMW) are absorbed by surface tissue such as skin and the cornea. We previously demonstrated that MMW damages the eye by heat accumulation and transfer. To examine the influence of humidity on such damage, we investigated the difference in MMW-induced ocular tissue temperature increase under high (70%) and low (30%) relative humidity. Eyes of pigmented rabbits (Dutch, 11-15week old) were exposed unilaterally to 40-GHz 200 mW/cm 2 MMW for 5 or 30 min at the center of the pupillary area with a spot-focus type lens antenna. Infrared thermography was used to measure corneal surface temperature during exposure. Temperature of corneal stroma and lens nucleus were measured using a fluoroptic thermometer during 0-30-min exposure. To visualize the dynamic change of temperature and its distribution in the anterior chamber, saline containing 0.2% microencapsulated thermochromic liquid crystal (MTLC) was injected into the eye anterior chamber. All three temperature measurements were much higher under high than low humidity at 24°C room temperature and MTLC results showed the same trend during MMW exposure. These findings indicate that humidity affects MMW-induced ocular temperature elevation. We showed that low humidity during MMW exposure decreased heat accumulation and transfer, whereas high humidity increased the thermal effect. The present data demonstrated that controlling the environmental humidity might have an impact on ocular damage in eyes exposed to MMW.

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Evaluation of the biological effects of police radar RAMER 7F

Cited by 6 publications

References 5 publications

Radiofrequency Field Exposure and Cancer: What Do the Laboratory Studies Suggest?

Radiofrequency Field Exposure and Cancer: What Do the Laboratory Studies Suggest?

Radiofrequency field exposure and cancer: what do the laboratory studies suggest?

Ocular Response to Millimeter Wave Exposure Under Different Levels of Humidity

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