盐酸尼卡地平核壳型纳米囊的制备及其药剂学性质研究

目的:制备盐酸尼卡地平核壳型纳米囊并考察其药剂学性质。方法:采用逐层静电自组装法制备盐酸尼卡地平核壳型纳米囊,考察纳米囊形态、粒径、载药量等,计算其在人工胃液、肠液中的累积释放度,并与原料药比较。结果:所制纳米囊呈球形,平均粒径为200nm,载药量最高值为2.512%;纳米囊在人工胃液、肠液中12h累积释放度分别为18.64%、70%,原料药在人工肠液中3h时已达到87%。结论:所制盐酸尼卡地平核壳型纳米囊具有良好的药剂学性质。

Preparation and Pharmaceutic Property of Core-shell Nanocapsules Containing Nicardipine Hydrochlo-ride

OBJECTIVE:To prepare core-shell nanocapsules loading nicardipine hydrochloride and to investigate its pharmaceutical characteristics. METHODS: Core-shell nanocapsules were prepared using layer-by-layer electrostatic self-assembly technique. The indexes including the shape and particle size and the loaded drug amount of the nanocapsules were evaluated, and its accumulative release rates in artificial gastric juice and intestinal juice were computed and compared with those of its crude drug. RESULTS: The results showed that the nanocapsules were spherical with a mean particle size of 200 nm and a maximum loaded drug amount of 2.512%. The drug release rate within 12 h reached 18.64% in artificial gastric juice and 70% in artificial intestinal juice, whereas within 3 h the drug release rate of its crude drug in artificial intestinal juice reached 87%. CONCLUSIONS: The prepared core-shell nanocapsules containing nicardipine hydrochloride had a good pharmaceutical property.