Nano-and/or micro-particulate formulations for local...

Details Nano-and/or micro-particulate formulations for local... Nano-and/or micro-particulate formulations for local...

A - Human Necessities

61

K

A61K 9/16 (2006.01) A61K 31/436 (2006.01) A61K 31/565 (2006.01) A61K 31/58 (2006.01) A61K 31/65 (2006.01) A61K 47/30 (2006.01) A61P 9/00 (2006.01) A61P 9/10 (2006.01)

Patent

CA 2568825

The present invention relates to nano- and/or micro-particulate formulations that can be locally injected into arterial walls at or near target sites to achieve a prolonged and sufficiently high local concentration of at least one pharmacologically active agent for treatment of vascular diseases, such as, for example, restenosis, vulnerable plaque, aneurysm, and stroke. Specifically, each formulation comprises biocompatible and biodegradable nano-particles and/or micro-particles loaded with the pharmacologically active agent and d-alpha-tocopheryl polyethylene glycol 1000 succinate (vitamin E TPGS). The formulations can be formed by a solvent evaporation/extraction process or a supercritical CO2 extraction process that uses vitamin E TPGS as an emulsifier. Further, vitamin E TPGS can be used as a stabilizer for the pharmacologically active agent in the final drug formulation, as well as a release modulation to control release of the pharmacologically active agent.

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