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公开(公告)号:US20130034589A1
公开(公告)日:2013-02-07
申请号:US13561106
申请日:2012-07-30
申请人: Lijuan ZHANG , Li LING , Li Ying ZHOU , Zhi Min WU , Xin Dong GUO , Wei JIANG , Qian LUO , Yu QIAN
发明人: Lijuan ZHANG , Li LING , Li Ying ZHOU , Zhi Min WU , Xin Dong GUO , Wei JIANG , Qian LUO , Yu QIAN
CPC分类号: A61K9/5153 , A61K9/5161 , A61K9/5192 , A61K38/28 , Y10S977/906
摘要: The present invention discloses the pH-sensitive nanoparticles composed of pH-sensitive polymer, hydrophobic material, internal stabilizer, external stabilizer content and insulin drug. The present invention also includes a method for preparation of pH-sensitive nanoparticles, in particular, a multiple emulsions solvent evaporation method. The pH-sensitive nanoparticles of the present invention show good pH-sensitive property with 100-300 nanometer particle size. Significant decrease in blood glucose level is observed in streptozotocin (STZ)-induced diabetic rats and the bioavailability of insulin is more than 10% after oral administration of the insulin-loaded pH-sensitive nanoparticles.
摘要翻译: 本发明公开了由pH敏感聚合物,疏水材料,内部稳定剂,外部稳定剂含量和胰岛素药物组成的pH敏感纳米颗粒。 本发明还包括用于制备pH敏感性纳米颗粒的方法,特别是多重乳液溶剂蒸发法。 本发明的pH敏感纳米颗粒具有100-300纳米粒度的良好的pH敏感性质。 在链脲佐菌素(STZ)诱导的糖尿病大鼠中观察到血糖水平的显着降低,并且口服施用负载胰岛素的pH敏感纳米颗粒后胰岛素的生物利用度大于10%。