ABSTRACT
Hippocampus,as an important organization of the nervous system,has a close relationship with the biology function of learning,memory and spatial cognition.It is very important to clarify the specific influence of non-ionizing radiation on the hippocampus.This paper summarized briefly the effects of nonionzing radiation on hippocampus and relevant research method.
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@#Objective To observe the effect of Liu's massage technique on teenagers with cervical vertebra disease.Methods 65 teenagers with cervical vertebra disease were divided into the trial group (n=35) and control group (n=30) treated with routine physical therapy and cervical vertebra disease gymnastics, but cases in the trial group were added with treatment of Liu's massage technique. All cases of two groups were evaluated with Clinical Assessment Scale for Cervical Spondylosis (CASCS) before and after treatment.Results After treatment, the CASCS scores of all cases improved significantly ( P<0.01), but the effect of the trial group was significantly superior to that of the control group ( P<0.01).Conclusion Liu's massage technique is effective on cervical vertebra disease of teenagers.
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Objective To study effects of 1 800 MHz electromagnetic field exposure in pregnancy on the ultrastructure of the hippocampus of offspring rats. Methods Ninety Wistar rats(female and male was 2:1) were mated,and the pregnant rats were exposed to 1 800 MHz microwave field with power density of 0.5 mW/cm2 or 1.0 mW /cm2,12 h/d,for 21 consecutive days,the rats in the control group received dummy exposure. Three rats aged 3 days and 72 days were selected from groups for ultrastructure observation of hippocampus. Results No significant pathological changes were observed in nerve cells and capillary vessels in the hippocampus. Conclusion The results of the present paper indicate that pregnancy exposure to 1 800 MHz electromagnetic field,may not lead to abnormal ultrastructure changes in hippocampus of offspring rats
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Objective To study the DNA damage in hippocampal cells of rats induced by 1 800 MHz electromagnetic irradiation. Methods Wistar rats were randomly divided into four groups, 2 exposed groups and 2 controls. The experimental subjects were exposed to the 1 800 MHz (continuous wave, CW) electromagnetic fields for 21days (12 h/d), the power densities were 0.5 mW/cm2 and 1.0 mW/cm2, meanwhile, sham-control exposures were carried out, the DNA damage was examined by Comet assay. Results The tailed rate and the tail area of the hippocampal cells in 1.0 mW/cm2 group was higher or larger than those in the control and 0.5 mW/cm2 groups(P