为了考察药物5-氟尿嘧啶(5-Fu)与吲哚美辛(IDMC)的协同作用,采用超临界流体强制分散溶液技术(SEDS),以二氯甲烷/二甲亚砜为共溶剂,制备了复合5-Fu和IDMC的L-聚乳酸(PLLA)微球.利用单因素法探索了制备复合微球的最佳外部条件,通过表面形貌、载药量、粒径分布、释放性能的检测和体外细胞实验来表征微球的各项性能.结果表明:当共溶剂二氯甲烷/二甲亚砜比例为30:1时,制备该微球的优化条件为39℃、14 MPa;微球形貌呈类球形,粒径分布在0.5～5μm;复合IDMC后微球具有更优良的缓释效果;载药微球对A549细胞系增殖有明显的抑制作用,但与复合IDMC前后微球共培养的2组细胞的相对生长速率(RGR)无显著性差异.
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