目的:观察3,6-(二甲氨基)-二苯骈碘杂六环葡萄糖酸盐对AGEP引起的大鼠主动脉平滑肌细胞增殖及牛主动脉内皮细胞内皮素和一氧化氮改变的影响.方法:采用牛血清白蛋白(BSA)与不同浓度葡萄糖(0,20,50,80 mmol*L-1)体外孵育制备糖基化终产物(AGEP),应用[3H]-TdR掺入法和MTT比色法观察I-93对重度糖化的AGEP诱导的大鼠主动脉平滑肌细胞(ASMC)增殖的影响;应用放射免疫技术及Greiss法观察I-93对AGEP引起的牛主动脉内皮细胞(BAEC)释放内皮素-1(ET-1)和一氧化氮(NO)的影响.结果:I-93 10-7～10-5mol*L-1能明显抑制AGEP 引起的ASMC增殖,其[3H]-TdR掺入量和MTT比色法的最大抑制率分别为79.4 %和44.2%.随AGEP糖浓度的增加(20～80mmol*L-1),BAEC培养液中ET-1含量亦逐渐上升[(493±63)～(779±105)ng*L-1],I-93 10-7～10-5mol*L-1能明显抑制重度糖化的AGEP促进ET-1释放的作用;I-93对AGEP灭活NO的作用有剂量依赖性抑制效应.结论:I-93有抑制ASMC增殖的作用;对AGEP诱导的BAEC释放ET-1和NO间平衡失调有调节作用,在防治阻塞性血管疾病方面I-93具有潜在的应用价值.

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