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AIM To investigate the effects of exposure to ultra-wide band (UWB) on aerobic metabolism and the activity in the heart and the lung of rats. METHODS TBA colorimetric methods were used to determine the changes in SOD activity and the content of MDA in the heart and the lung of rats after the rats were exposed to a certain dose of UWB. RESULTS The results showed that, compared with control group, the activity of SOD in the heart was significantly reduced at 72 hours after the rats were exposed to 100k pulses (P

Objective: To investigate the effect of PEMW on humoral immunity and provide theoretical basis for formulating the standard of PEMW injury and protection. Methods: We set three groups of rats to receive whole body exposure by using 100, 103 and 104 times pulse electromagnetic wave(PEMW) respectively, whose field intensity is 100kV/m of each, then anesthetized the rats at different time after the exposure, gathered blood and separated the serum.. Immunization nephelometry was used to determine the content of IgA, IgG, IgM in serum. Results: The content of IgA, IgG, IgM in serum began to decrease at 12h after 104 times PEMW exposure, especially that of IgM and IgG decreased significantly (p

To investigate the effects of electromagnetic pulse (EMP) on the activity of protein kinase A (PKA) and protein kinase C (PKC) of rat myocardium in cellular signal transduction. Methods: EMP generator (40 kV·m-1, 50 pulses, interphase at 2 min) was used to expose the SD rats to EMP; radiotracing method was used to determine the activity of protein kinase C and protein kinase A in myocardial tissues. Results: At 12h after the exposure, compared with normal control group, myocardial cytoplasm PKA activity of the EMP group was found to have significantly increased (P