The Effects Of Millimeter Wave Irradiation On The Growth And Development Of The Postimplantated Mouse Embryos

The Radiation medicine department of the Fourth Military Medical University, Xi'anMillimeter wave has been increasingly used in many fields, but theknowledge about its bioeffects are still few, especially on mammal embryohadn't been studied except our laboratory.But this is of great importance to understanding the hazards of millimeter wave to the environment. Besides, the research can provide valuable bionedical parameters to government to formulate safety standard about the use and protective measures of millimeter wave.In previous works, mice were irradiated with millimeter wave frequency 36.11 GHz at power density 7.2mW/cm~2 for 2 hours daily from the 6th to 15th day of gestation and the result showed that the millimeter wave radiation can cause temporary lower body weight of postnatal posterity within 3 days after birth and lower capacity of learning and memory of the matured litters.In this experiment mice were irradiated with millimeter wave in same frequency but increased power density. By comparing bioeffect intensity of the two experiments, we preliminarily try to clarify that bioeffect of millimeter wave has power density-effect relativity.The indexes which closely ralate to learning and memory were used to clarify the possible mechanism which millimeter wave radiation lowered capacity of learning and memory of the matured fetuses. By measuring content of somatostatin (SS) in the brain, we attempt to indicate the mechanism on millimeter wave radiation induced growth and development retardation of the litters.In this experiment 2 months old BALB/c mice were used and were irradiated by millimeter wave frequency 36.11 GHz at power density 10.0mV/cm~2 for 2 hours daily from the 6th to 15th day of gestation. We evaluated that with teratological at the end of gestation (18th day) and postnatal psychophysiolo-...