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    • 1. 发明申请
    • CONTROLLED REGIONAL ORAL DELIVERY
    • 控制区域口供
    • WO2006039022A2
    • 2006-04-13
    • PCT/US2005030552
    • 2005-08-29
    • SPHERICS INCMATHIOWITZ EDITHNANGIA AVINASHJACOB JULES SSHAKED ZE EVMOSLEMY PEYMAN
    • MATHIOWITZ EDITHNANGIA AVINASHJACOB JULES SSHAKED ZE EVMOSLEMY PEYMAN
    • A61K9/28
    • A61K9/5031A61K9/006A61K9/0092A61K9/1641A61K9/1652A61K9/1676A61K9/2018A61K9/2031A61K9/204A61K9/2054A61K9/2077A61K9/2086A61K9/209A61K9/4808A61K9/4891A61K9/5026A61K9/5084A61K31/74
    • A composite formulation has been developed for selective, high efficacy delivery to specific regions of the mouth and gastrointestinal tract. The formulation is typically in the form of a tablet or capsule, which may include microparticles or beads. The formulation uses bioadhesive and controlled release elements to direct release to specific regions, where the drug is absorbed in enhanced amounts relative to the formulation in the absence of the bioadhesive and/or controlled release elements. This is demonstrated by an example showing delivery of gabapentin with a greater area under the curve ("AUC") relative to the FDA reference immediate release drug, i.e., the AUC of the composite bioadhesive formulation is greater than 100% of the AUC of the immediate release drug. In the preferred embodiments, the formulation includes drug to be delivered, controlled release elements, and one or more bioadhesive elements. The bioadhesive polymer may be either dispersed in the matrix of the tablet or applied as a direct compressed coating to the solid oral dosage form. The controlled release elements are selected to determine the site of release. The bioadhesive components are selected to provide retention of the formulation at the desired site of uptake and administration. By selecting for both release and retention at a specific site, typically based on time of transit through the gastrointestinal tract, one obtains enhanced efficacy of uptake of the drug. This is particularly useful for drugs with narrow windows of absorption, and drugs with poor solubility such as the BCE class III and class IV drugs.
    • 已经开发出复合制剂用于选择性地,高效地递送到口腔和胃肠道的特定区域。 制剂通常为片剂或胶囊形式,其可包括微粒或珠粒。 该制剂使用生物粘附和控制释放元件将释放引导到特定区域,其中药物在不存在生物粘附和/或控制释放元件的情况下相对于制剂以增强的量被吸收。 这通过示例显示,相对于FDA参考即时释放药物,曲线下面积更大的加巴喷丁(“AUC”)的递送,即复合生物粘附制剂的AUC大于100μg的AUC 立即释放药物。 在优选的实施方案中,制剂包括待递送的药物,控制释放元件和一种或多种生物粘附元件。 生物粘附聚合物可以分散在片剂的基质中,或作为直接压片包被施用于固体口服剂型。 控制释放元件被选择以确定释放部位。 生物粘附组分被选择以提供制剂在所需的摄取和给药部位的保留。 通过选择在特定部位的释放和保留,通常基于通过胃肠道的转运时间,获得药物摄取的增强的功效。 这对于具有狭窄吸收窗口的药物和溶解性差的药物如BCE III类和IV类药物特别有用。
    • 5. 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
    • WO2005084639A2
    • 2005-09-15
    • PCT/US2005/007525
    • 2005-03-03
    • SPHERICS, INC.JACOB, Jules, S.BASSETT, MichaelSCHESTOPOL, Marcus, A.MATHIOWITZ, EdithNANGIA, AvinashCARTER, BennettMOSLEMY, PeymanSHAKED, Ze'evENSCORE, DavidSIKES, Courtney
    • JACOB, Jules, S.BASSETT, MichaelSCHESTOPOL, Marcus, A.MATHIOWITZ, EdithNANGIA, AvinashCARTER, BennettMOSLEMY, PeymanSHAKED, Ze'evENSCORE, DavidSIKES, Courtney
    • A61K9/00
    • 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.
    • 本文公开了由于其不溶于水且缓慢溶出动力学而具有低口服生物利用度的II类药物的口服递送系统以及制备此类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。 这些效果的结合使得可以制备适用于许多II类药物的口服给药的致密稳定的剂型。