摘要:
A method and devices for localized delivery of a chemotherapeutic agent to solid tumors, wherein the agent does not cross the blood-brain barrier and is characterized by poor bioavailability and/or short half-lives in vivo, are described. The devices consist of reservoirs which release drug over an extended period while at the same time preserving the bioactivity and bioavailability of the agent. In the most preferred embodiment, the device consists of biodegradable polymeric matrixes, although reservoirs can also be formulated from non-biodegradable polymers or reservoirs connected to implanted infusion pumps. The devices are implanted within or immediately adjacent the tumors to be treated or the site where they have been surgically removed.
摘要:
A method and devices for localized delivery of a chemotherapeutic agent to solid tumors, wherein the agent does not cross the blood-brain barrier and is characterized by poor bioavailability and/or short half-lives in vivo, are described. The devices consist of reservoirs which release drug over an extended time period while at the same time preserving the bioactivity and bioavailability of the agent. In the most preferred embodiment, the device consists of biodegradable polymeric matrixes, although reservoirs can also be formulated from non-biodegradable polymers or reservoirs connected to implanted infusion pumps. The devices are implanted within or immediately adjacent the tumors to be treated or the site where they have been surgically removed. The examples demonstrate the efficacy of paclitaxel and camptothecin delivered in polymeric implants prepared by compression molding of biodegradable and non-biodegradable polymers, respectively. The results are highly statistically significant.
摘要:
A method and devices for localized delivery of a chemotherapeutic agent to solid tumors, wherein the agent does not cross the blood-brain barrier and is characterized by poor bioavailability and/or short half-lives in vivo, are described. The devices consist of reservoirs which release drug over an extended time period while at the same time preserving the bioactivity and bioavailability of the agent. In the most preferred embodiment, the device consists of biodegradable polymeric matrixes, although reservoirs can also be formulated from non-biodegradable polymers or reservoirs connected to implanted infusion pumps. The devices are implanted within or immediately adjacent the tumors to be treated or the site where they have been surgically removed. The examples demonstrate the efficacy of paclitaxel and camptothecin delivered in polymeric implants prepared by compression molding of biodegradable and non-biodegradable polymers, respectively. The results are highly statistically significant.
摘要:
The additive effect of combined intracranial carmustine (“BCNU”) with intracranial temozolomide (“TMZ”), and particularly in combination with radiation (“XRT”), in the treatment of two rat intracranial glioma models, the 9L gliosarcoma and the F98 glioma, demonstrates that local delivery of both drugs, especially in combination with radiation, is far more effective than delivery of either drug alone or one systemically and one locally, either with or without radiation. The triple therapy showed a significant improvement in survival when compared to controls (p=0.0004), local BCNU (p=0.0043), oral TMZ (p=0.0026), local TMZ (p=0.0105), and the combinations of either BCNU and XRT (p=0.0378) or oral TMZ and local BCNU (p=0.0154).
摘要:
The additive effect of combined intracranial carmustine (“BCNU”) with intracranial temozolomide (“TMZ”), and particularly in combination with radiation (“XRT”), in the treatment of two rat intracranial glioma models, the 9L gliosarcoma and the F98 glioma, demonstrates that local delivery of both drugs, especially in combination with radiation, is far more effective than delivery of either drug alone or one systemically and one locally, either with or without radiation. The triple therapy showed a significant improvement in survival when compared to controls (p=0.0004), local BCNU (p=0.0043), oral TMZ (p=0.0026), local TMZ (p=0.0105), and the combinations of either BCNU and XRT (p=0.0378) or oral TMZ and local BCNU (p=0.0154).
摘要:
Localized delivery of 1,25 D3 directly to a target area using biodegradable polymeric matrices maximizes the efficacy of this drug while minimizing systemic exposure and toxicity. Anticalcemic analogs of 1,25 D3 have also been incorporated into controlled release polymer formulations to achieve efficacious intracranial concentrations of 1,25 D3 analogs for the treatment of intracranial tumors as well as neurodegenerative disorders such as Alzheimer's disease as well as to maximize the efficacy of these analogs in the treatment of systemic malignancies. The therapeutic efficacy of these formulations was demonstrated through a variety of studies in vitro and in vivo. Hybrid analogs of 1,25 D3 were incorporated into biodegradable polymer wafers composed of a polyanhydride copolymer of 1,3-bis(p-carboxyphenoxy)propane (CPP) and sebacic acid (SA) in a 20:80 molar ratio. In addition to providing improved treatments for malignancies and neurodegenerative disorders, the spatial localization and high reproducibility of this controlled delivery methodology presents a unique opportunity to study in vivo the poorly understood mechanisms of 1,25 D3's antiangiogenic, antiproliferative, and transcriptional regulating activities.
摘要翻译:使用可生物降解的聚合物基质直接向目标区域局部递送1,25 D 3 N使该药物的功效最大化,同时使全身暴露和毒性最小化。 1,25 D 3 N的类似物也被并入控释聚合物制剂中,以实现颅内肿瘤治疗的有效颅内浓度1,25D 3 N 3类似物 以及神经变性疾病如阿尔茨海默病,以及使这些类似物在治疗全身性恶性肿瘤中的功效最大化。 通过体外和体内的各种研究证实了这些制剂的治疗功效。 将1,25 D 3 N的混合类似物掺入到由20重量份的1,3-双(对羧基苯氧基)丙烷(CPP)和癸二酸(SA)的聚酐共聚物组成的可生物降解的聚合物晶片中 :80摩尔比。 除了为恶性肿瘤和神经变性疾病提供改进的治疗之外,这种受控递送方法的空间定位和高重现性提供了一个独特的机会,可以在体内研究一个不太了解的1,25 D 3 抗血管生成,抗增殖和转录调节活性。
摘要:
Pharmaceutical compositions for delivering an effective dose of an angiogenesis inhibitor consisting of a tetracycline or tetracycline such as minocycline. The effective dosage for inhibition of angiogenesis based on in vitro testing is between one and 500 micromolar. The compositions are delivered topically, locally or systemically using implants or injection. The composition is extremely selective for growth of endothelial cells, inhibiting growth, but is not cytotoxic at the effective dosages.