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    • 5. 发明申请
    • AERODYNAMICALLY LIGHT PARTICLES FOR PULMONARY DRUG DELIVERY
    • 用于脉冲药物递送的空气微粒
    • WO1997044013A1
    • 1997-11-27
    • PCT/US1997008895
    • 1997-05-23
    • MASSACHUSETTS INSTITUTE OF TECHNOLOGYTHE PENN STATE RESEARCH FOUNDATIONEDWARDS, David, A.CAPONETTI, GiovanniHRKACH, Jeffrey, S.LOTAN, NoahHANES, JustinBEN-JEBRIA, Abdell, AzizLANGER, Robert, S.
    • MASSACHUSETTS INSTITUTE OF TECHNOLOGYTHE PENN STATE RESEARCH FOUNDATION
    • A61K09/00
    • A61K9/0075A61K9/1647A61K31/137
    • Improved aerodynamically light particles for delivery to the pulmonary system, and methods for their preparation and administration are provided. In a preferred embodiment, the aerodynamically light particles are made of a biodegradable material and have a tap density less than 0.4 g/cm and a mass mean diameter between 5 mu m and 30 mu m. The particles may be formed of biodegradable materials such as biodegradable polymers. For example, the particles may be formed of a functionalized polyester graft copolymer consisting of a linear alpha -hydroxy-acid polyester backbone having at least one amino acid group incorporated therein and at least one poly(amino acid) side chain extending from an amino acid group in the polyester backbone. In one embodiment, aerodynamically light particles having a large mean diameter, for example greater than 5 mu m, can be used for enhanced delivery of a therapeutic or diagnostic agent to the alveolar region of the lung. The aerodynamically light particles optionally can incorporate a therapeutic or diagnostic agent, and may be effectively aerosolized for administration to the respiratory tract to permit systemic or local delivery of wide variety of incrorporated agents.
    • 提供了用于递送至肺系统的改善的空气动力学轻微颗粒,以及其制备和给药方法。 在优选实施方案中,空气动力学轻微颗粒由可生物降解材料制成,并且振实密度小于0.4g / cm 3,质量平均直径在5μm至30μm之间。 颗粒可以由可生物降解的材料如可生物降解的聚合物形成。 例如,颗粒可以由官能化的聚酯接枝共聚物形成,该聚酯接枝共聚物由具有至少一个氨基酸基团的直链α-羟基酸聚酯主链和至少一个从氨基酸延伸的聚(氨基酸)侧链组成 集团在聚酯骨干。 在一个实施方案中,具有大平均直径(例如大于5μm)的空气动力学轻微颗粒可用于增强治疗剂或诊断剂递送至肺泡区域。 空气动力学轻微颗粒任选地可以掺入治疗剂或诊断剂,并且可以有效地雾化以用于向呼吸道施用以允许全身或局部递送各种各样的掺入剂。