Report of work performed by Dr. Ivancica Trosic in response to procurement request No. 4478H University of California, Los Alamos National Laboratory, Los Alamos, New Mexico

Rats were intratracheally instilled with polystyrene microspheres and/or asbestos particles (0.5 mg) suspended in PBS. Six animals from each group were dispatched n days 1, 7, 30, 80 and 150 days after their respective instillations. Their lungs were lavaged, and quantifications of lavaged fluorescent microspheres, analyses of distributions of microspheres in lung, phagocytes by type, quantification of unlavaged lung burdens of microspheres, and quantification of tracheobronchial lymph mode burdens of microspheres were performed. Data are presented herein describing lung retention kinetics of the microspheres, analyses of particle distributions in lung phagocytes over the course of alveolar phase clearlance, analyses of changes in the sizes of the lung`s population of free cells

Impact of 864 MHz or 935 MHz radiofrequency microwave radiation on the basic growth parameters of V79 cell line

The aim of this study was to evaluate and compare the influence of 864 MHz and 935 MHz radiofre- quency/microwave (RF/MW) fields on the growth, colony-forming ability, and viability of V79 cells (continuous line). Cell samples with 1×10 4 V79 cells each, were exposed to continuous wave frequen- cies of 864 MHz and 935 MHz for 1, 2 and 3 hours. Exposed samples were matched with unexposed con- trol samples. Specific absorption rate (SAR) was 0.08 W/kg for the 864 MHz or 0.12 W/kg for the 935 MHz field. Cell growth and viability were determined by counting cells every day for five days after exposure. Colony-forming ability was assessed by counting colonies seven days after exposure. The growth of the 864 MHz-irradiated cells was significant after two- and three-hour exposure 72 hours after irradiation (p < 0.05). The similar was observed 72 hours after exposure for cells exposed to 935 MHz microwaves for three hours (p < 0.05). Colony-forming ability and cell viability in V79 cells exposed to 864 MHz or 935 MHz microwaves did not significantly differ from control cells. The two applied RF/MW fields showed similar effects on the growth, colony-forming ability and viability of V79 cells. Cell growth impact was time-dependent for both fields

The effect of prenatal exposure to 1800 MHz electromagnetic field on calcineurin and bone development in rats

PURPOSE: To investigated the effects of exposure to an 1800 MHz electromagnetic field (EMF) on bone development during the prenatal period in rats. METHODS: Pregnant rats in the experimental group were exposed to radiation for six, 12, and 24 hours daily for 20 days. No radiation was given to the pregnant rats in the control group. We distributed the newborn rats into four groups according to prenatal EMF exposure as follows: Group 1 was not exposed to EMF; groups 2, 3, and 4 were exposed to EMF for six, 12, and 24 hours a day, respectively. The rats were evaluated at the end of the 60th day following birth. RESULTS: Increasing the duration of EMF exposure during the prenatal period resulted in a significant reduction of resting cartilage levels and a significant increase in the number of apoptotic chondrocytes and myocytes. There was also a reduction in calcineurin activities in both bone and muscle tissues. We observed that the development of the femur, tibia, and ulna were negatively affected, especially with a daily EMF exposure of 24 hours. CONCLUSION: Bone and muscle tissue development was negatively affected due to prenatal exposure to 1800 MHz radiofrequency electromagnetic field