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文献报道苯妥英钠（ｐｈｅｎｙｔｉｏｎｓｏｄｉｕｎ，ＰＨＴ）有一定的辐射防护作用［１］，但其作用机理仍有待阐明。由于ＰＨＴ有广泛的生物学活性和药理治疗作用，如临床用于抗心律失常或治疗癫痫疗效肯定，但尚难以用其已知的药理作用机理来解释抗放效应。近年来文献报
It has been reported in the literature that phenytional sodium (PHT) has some radioprotective effects [1], but its mechanism of action remains to be elucidated. Due to the wide range of biological activities and pharmacological effects of PHT, such as the clinical use of anti-arrhythmia or the treatment of epilepsy, it is still difficult to explain the anti-attorney effect with its known mechanism of pharmacological action. In recent years, the newspaper