申请人:Advanced Inhalation Research, Inc.
公开号:US20040042970A1
公开(公告)日:2004-03-04
The present invention is based, in part, on the unexpected discovery that particles for pulmonary delivery of a therapeutic, prophylactic or diagnostic agent that comprise a phospholipid and a sufficient amount of leucine can produce sustained effect of the agent. Specifically, particles for pulmonary delivery of a therapeutic, prophylactic or diagnostic agent that contain a phospholipid or combination of phospholipids, wherein the phospholipid or combination of phospholipids is present in the particles in an amount of about 1 to 46 weight percent; and leucine, wherein leucine is present in the particles in an amount of at least 46 weight percent, can contribute to sustained effect of the agent. Particles that comprise at least 46 weight percent leucine but that do not contain phospholipids do not exhibit these same sustained effect properties.
本发明部分基于一个意外的发现,即包含磷脂和足够量亮氨酸的用于肺部输送治疗、预防或诊断剂的颗粒可以产生药剂的持续效果。具体地,用于肺部输送治疗、预防或诊断剂的颗粒包含磷脂或磷脂的组合,其中磷脂或磷脂的组合以约1至46重量百分比存在于颗粒中;以及亮氨酸,其中亮氨酸以至少46重量百分比存在于颗粒中,可以促进药剂的持续效果。含有至少46重量百分比亮氨酸但不含磷脂的颗粒不具备这些相同的持续效果特性。