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目的:通过体内实验,探讨中远红外线对荷瘤鼠S-180抗氧化作用.方法:采用黄嘌呤氧化法测定SOD活性,用改良巴比妥酸微量法测定MDA含量和GSH－Px的活力.结果:日光照射荷瘤鼠S-180肝脏SOD、MDA和GSH－Px未见明显改变;而应用中远红外线治疗,肝脏SOD、GSH-Px活性明显升高,MDA含量明显降低(P“,”To explore antioxdate effect on the kind of S-180 tumor rats treated with far and middle infra-red ray by the Pxperiment in vitro. Methods: To measure the activity of SOD by the xanthinoxidase method and to measure the content of MDA and the activity of GSH-Px by the barbiturate microdetermination. Result: SOD, MDA and GSH-Px contents of the liver in the rat lighted by daylight showed no insificant changes. But the contents of SOD and GSH-Px in the rat treated by far and middle infra-red ray were increased remarkdly (P<0.01), while the content of MDA was decreased (P<0.01). Conclusion: In this experimental condition, the contents of SOD, GSH-Px and MDA of the liver in the rat can be changed by far-middle infra-red ray.