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    • 1. 发明申请
    • POLYMERIC DRUG DELIVERY SYSTEM FOR HYDROPHOBIC DRUGS
    • 用于疏水性药物的聚合物药物递送系统
    • WO2005084639A9
    • 2005-11-17
    • PCT/US2005007525
    • 2005-03-03
    • SPHERICS INCJACOB JULES SBASSETT MICHAELSCHESTOPOL MARCUS AMATHIOWITZ EDITHNANGIA AVINASHCARTER BENNETTMOSLEMY PEYMANSHAKED ZE EVENSCORE DAVIDSIKES COURTNEY
    • JACOB JULES SBASSETT MICHAELSCHESTOPOL MARCUS AMATHIOWITZ EDITHNANGIA AVINASHCARTER BENNETTMOSLEMY PEYMANSHAKED ZE EVENSCORE DAVIDSIKES COURTNEY
    • A61K9/00A61K9/14A61K9/16A61K9/20A61K9/24A61K9/28A61K9/48
    • A61K9/209A61K9/0065A61K9/1635A61K9/1641A61K9/1647A61K9/1652A61K9/1676A61K9/2054A61K9/2077A61K9/2086A61K9/2853
    • An oral delivery system for Class II drugs that have low oral bioavailability due to their insolubility in water and slow dissolution kinetics and method for making such a drug delivery system are disclosed herein. The formulation may be a controlled release or immediate release formulation. The immediate release formulation contains a Class II drug, together with a hydrophobic polymer, preferably a bioadhesive polymer. In one embodiment, the drug and polymer are co-dissolved in a common solvent. The solution is formed into small solid particles by any convenient method, particularly by spray drying. The resulting particles contain drug dispersed as small particles in a polymeric matrix. The particles are stable against aggregation, and can be put into capsules or tableted for administration. The controlled release formulations contain a BCS Class II drug and a bioadhesive polymer. The controlled release formulations may be in the form of a tablet, capsules, mini-tab, microparticulate, or osmotic pump. Enhancement of oral uptake of the drug from use of bioadhesive polymers occurs through (1) increased dissolution kinetics due to stable micronization of the drug, (2) rapid release of the drug from the polymer in the GI tract; and (3) prolonged GI transit due to bioadhesive properties of the polymers. The combination of these effects allows the preparation of a compact, stable dosage form suitable for oral administration of many class II drugs.
    • 本文公开了由于不溶于水而具有低口服生物利用度和缓慢溶出动力学的II类药物的口服递送系统以及制备这种药物递送系统的方法。 该制剂可以是控释或速释制剂。 速释制剂含有II类药物以及疏水聚合物,优选生物粘附聚合物。 在一个实施方案中,药物和聚合物共溶于普通溶剂中。 通过任何方便的方法,特别是通过喷雾干燥,溶液形成小的固体颗粒。 所得颗粒含有作为小颗粒分散在聚合物基质中的药物。 颗粒对于聚集是稳定的,并且可以放入胶囊或制成片剂给药。 控释制剂含有BCS II类药物和生物粘附聚合物。 控释制剂可以是片剂,胶囊剂,小片,微粒或渗透泵的形式。 (1)由于药物的稳定微粉化,溶解动力学增加,(2)药物从胃肠道中的聚合物中快速释放,因此通过使用生物粘附聚合物增强药物的口服摄取。 和(3)由于聚合物的生物粘附性而延长的GI运输。 这些效果的组合允许制备适用于许多II类药物口服给药的紧凑稳定剂型。
    • 6. 发明申请
    • PARTICLES WITH HIGH UNIFORM LOADING OF NANOPARTICLES AND METHODS OF PREPARATION THEREOF
    • 高度均匀负载纳米颗粒的颗粒及其制备方法
    • WO2008054874A9
    • 2008-06-12
    • PCT/US2007068881
    • 2007-05-14
    • UNIV BROWNFREEDOM 2 INCMATHIOWITZ EDITHKUNDAKOVIC LJILJANAMORELLO ARTHUR PETERHARRISON MICHAEL WREINEKE JOSHUA JAMES
    • MATHIOWITZ EDITHKUNDAKOVIC LJILJANAMORELLO ARTHUR PETERHARRISON MICHAEL WREINEKE JOSHUA JAMES
    • A61K9/14
    • A61K9/1694A61K8/11A61K49/0021A61K49/0034A61K49/0036A61K49/0091A61K49/0093A61K2800/412A61Q1/02A61Q19/00C09C1/00
    • Methods to produce polymeric microparticles containing nanoparticles such, as pigments, dyes and other chromophores for cosmetic use, plastic surgery therapeutic use, and tattoos have been developed. The microparticles contain within the polymer a very uniform dispersion of dye particles. The methods by which the particles are made ensure a homogeneous mixture and high loading. The microparticles are made using air, one of a number of known methods such as phase inversion, solvent evaporation, and melt processing. The improvement is in the use of a method that makes, a stable dispersion of the nanoparticles in the liquid polymer before formation of the microparticles. This is achieved through selection of appropriate solvent, optionally including surfactant, and then subjecting the dispersion to mechanical processing that stabilizes the dispersion within the polymer solvent, so that the nanoparticles remain suspended for at least thirty minutes, in some cases two hours to 48 hours, sometimes up to three months. The mechanical processing can be sonication and/or production of shear forces, for examples, resulting from use of an open blade or rotor stator mixer or milling with a concentric shaft, at a speed such as between 5000 and 25,000 RPM.
    • 已经开发了生产含纳米颗粒的聚合物微粒的方法,例如用于化妆用途的颜料,染料和其他发色团,整形手术治疗用途和纹身。 微粒在聚合物内含有非常均匀的染料颗粒分散体。 制造颗粒的方法确保均匀混合物和高负载。 使用空气制备微粒,这是许多已知方法中的一种,例如相转化,溶剂蒸发和熔融加工。 改进在于使用在形成微粒之前使纳米颗粒在液体聚合物中稳定分散的方法。 这通过选择合适的溶剂(任选地包括表面活性剂),然后使分散体经受机械处理来实现,所述机械处理稳定了聚合物溶剂中的分散体,使得纳米颗粒保持悬浮至少三十分钟,在一些情况下两小时至48小时 有时长达三个月。 机械加工可以是超声波处理和/或剪切力的产生,例如,由于使用开式叶片或转子定子混合器或者以同心轴进行铣削,速度例如在5000-25,000RPM之间。
    • 10. 发明申请
    • BIOADHESIVE POLYMERS WITH CATECHOL FUNCTIONALITY
    • 具有CATECHOL功能的生物聚合物
    • WO2005056708A2
    • 2005-06-23
    • PCT/US2004/041783
    • 2004-12-09
    • SPHERICS, INC.SCHESTOPOL, Marcus, A.JACOB, Jules, S.DONNELY, RyanRICKETTS, Thomas, L.NANGIA, AvinashMATHIOWITZ, EdithSHAKED, Ze'ev
    • SCHESTOPOL, Marcus, A.JACOB, Jules, S.DONNELY, RyanRICKETTS, Thomas, L.NANGIA, AvinashMATHIOWITZ, EdithSHAKED, Ze'ev
    • C09J129/00
    • C08F8/32A61K9/0004A61K9/006A61K9/0065A61K9/204A61K9/2077A61K9/2081A61K9/2086C08G63/91C08G63/912C09J167/00C09J167/04C08F222/06
    • Polymers with improved bioadhesive properties and methods for improving bioadhesion of polymers have been developed. A compound containing an aromatic group which contains one or more hydroxyl groups is grafted onto a polymer or coupled to individual monomers. In one embodiment, the polymer is a biodegradable polymer. In another embodiment, the monomers may be polymerized to form any type of polymer, including biodegradable and non-biodegradable polymers. In some embodiments, the polymer is a hydrophobic polymer. In the preferred embodiment, the polymer is a hydrophobic polymer. In the preferred embodiment, the aromatic compound is catechol or a derivative thereof and the polymer contains reactive functional groups. In the most preferred embodiment, the polymer is a polyanhydride and the aromatic compound is the catechol derivative, DOPA. These materials display bioadhesive properties superior to conventional bioadhesives used in therapeutic and diagnostic applications. These bioadhesive materials can be used to fabricate new drug delivery or diagnostic systems with increased residence time at tissue surfaces, and consequently increase the bioavailability of a drug or a diagnostic agent. In a preferred embodiment, the bioadhesive material is a coating on a controlled release oral dosage formulation and/or forms a matrix in an oral dosage formulation.
    • 已经开发了具有改进的生物粘附性质的聚合物和改善聚合物生物粘附的方法。 含有含有一个或多个羟基的芳族基团的化合物被接枝到聚合物上或与单独的单体偶联。 在一个实施方案中,聚合物是可生物降解的聚合物。 在另一个实施方案中,单体可以聚合以形成任何类型的聚合物,包括可生物降解和不可生物降解的聚合物。 在一些实施方案中,聚合物是疏水性聚合物。 在优选的实施方案中,聚合物是疏水性聚合物。 在优选的实施方案中,芳族化合物是儿茶酚或其衍生物,并且聚合物含有反应性官能团。 在最优选的实施方案中,聚合物是聚酐,芳族化合物是邻苯二酚衍生物DOPA。 这些材料显示出比用于治疗和诊断应用的常规生物粘合剂优越的生物粘附性。 这些生物粘附材料可用于制造具有增加的组织表面停留时间的新药物递送或诊断系统,并因此提高药物或诊断剂的生物利用度。 在优选的实施方案中,生物粘附材料是在控释口服剂量制剂上的涂层和/或在口服剂量制剂中形成基质。