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《Fudan University Journal of Medical Sciences》 2009-06
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The effect of magnetic field on serum free radicles in patients undergoing operation for pituitary tumor

DING Xiao-nan,GU Hua-hua,LIANG Wei-min(Department of Anesthesiology,Huashan Hospital,Fudan University,Shanghai 200040,China)  
Objective To study the effect of magnetic field on serum activity of superoxide dismutase(SOD),content of malon-dialdehyde(MDA)and content of nitric oxide(NO)in patients undergoing operation for pituitary Tumor. Methods Sixteen ASA Ⅰor Ⅱ patients undergoing pituitary tumor surgery under general anesthesia were randomly divided into 2 groups(n=8 each): magnetic field group(M) and control group(C).Patients in magnetic field group were exposed in 150 mT magnetic field during the operation period.Blood samples were taken from radial artery for determination of serum SOD,MAD and NO before induction of anesthesia(T0,baseline),after induction(T1),70 min after induction(exposed in magnetic field for 60 min)(T2)and 130 min after induction(exposed in magnetic field for 120 min)(T3). Results There was no significant difference between the two groups in age,sex(M/F ratio),body weight,body height,duration of operation and duration of anaesthesia.The serum activity of SOD and content of NO were significantly higher at T3 in group M than that in group C,and the serum content of MDA was lower at T3 in group M than that in group C. Conclusions The magnetic field not only increases serum SOD activity and the content of NO in patient undergoing operation for pituitary tumor,but also reduces the content of MDA in them.
【CateGory Index】: R736.4
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