摘要:目的探讨选择性环氧合酶-2(COX-2)抑制剂NS-398和抗癌药5-氟尿嘧啶(5-FU)联用对胃癌细胞增殖的影响。方法不同浓度的NS-398与10μg/mL的5-FU单用、联用48h。四甲基偶氮唑盐(MTT)法检测各组抑制率,应用中效原理和金正均法判定选择性环氧合酶-2抑制剂与抗癌药联用的效果。结果两药单独应用时药物浓度和抑制率呈量效关系,其效应随药物浓度的增加而增加;两种药物联用抑制率均高于单用,具有协同作用。结论NS-398与5-FU联用后起协同作用,可以作为5-FU的化疗增敏剂。
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