【摘要】 本实验用ＢＡＬＢ／ｃ裸小鼠复制人ＮＰＣ模型，检测荷人ＮＰＣ裸鼠血清ＭＤＡ和脾ＮＫ活性，以探讨瘤宿主ＮＫ活性改变的原因和可能机理，观察中药“癌克星”制剂对ＮＰＣ的抑瘤作用及对ＭＤＡ含量和脾ＮＫ活性等的影响；以探讨其抑瘤机理。结果发现荷人ＮＰＣ裸鼠血清ＭＤＡ含量（３７．９２±５．３６ｎｍｏｌ／ｍｌ）明显高于正常裸鼠（１３．９０±１．６３ｎｍｏｌ／ｍｌ）（Ｐ＜０．０１），而脾ＮＫ活性（４０．９３±２．３９）则明显低于正常裸鼠（６７．０９±６．２８）（Ｐ＜０．０１）。中药“癌克星”制剂对荷瘤鼠具明显抑瘤作用，抑瘤率２５．８５～９９．９９％；并可降低荷瘤鼠血清ＭＤＡ含量，部分提高ＮＫ活性，增加瘤组织单核细胞的浸润。本实验提示，ＦＲ可能作为免疫抑制因子之一，使ＮＫ活性下降。“癌克星”对ＮＰＣ具明显抑癌效应，其抑瘤作用可能是通过降低瘤宿主体内ＦＲ，提高机体免疫功能而实现。更多还原

【Abstract】 BALB/c Nude mica(NM)bearing nasopharyngeal carcinoma(NPC )was reproduced by hypodermic implanting human CNE-2 cell into right-side of axillaryfossa The change of serum malondialdehyde(MDA)and splenic NK bearing humanNPC were examined.Meanwhile,we observed the effected of "Ai Ke Xing"on tumor’ssize,serum MDA and splenic NK activation in NM bearing human NPC.Results indicated that in NM bearing human NPC serum MDA content(37.92 ± 5.36 nmol /ml) increasedmarkedly, while splenic NK activation decreased significantly, in comparison with thecontrol group (MDA 13.90± 1.63 nmol/ml,splenic NK cativation 67.09± 6.28). "Ai KeXing" inhibited NPC growth.Rate of inhibition was between 2 5.8 5 and 9 9.99 per cent.It decreased serum MDA,elevated splenic NK activation and enhanced mononuclears toinfiltrate to the transplanted NPC tissue.These results suggested that free radicals mightfunction as one of the immunosupressive factors.It might cause host’s splenic NKactivation decreasing. "Ai Ke Xing" had antitumor effect.It might have decreased freeradicals and elevated splenic NK activation in NM bearing human NPC.更多还原