摘要:
Disclosed herein are surface-active biodegradable block copolymers comprising one or more hydrophobic blocks and one or more hydrophilic blocks. The surface-active polymers are used as stabilizers in emulsions which are used in microencapsulation processes. Also disclosed are microparticles prepared from the emulsions.
摘要:
Disclosed are terpolymer compositions of lactide, glycolide, and caprolactone and methods of making such polymers with an initiator. Methods of using the terpolymers as a drug delivery platform are also disclosed.
摘要:
Methods and compositions are disclosed whereby free antibody or nucleic acid co-administered with a long-acting formulation, such as a microparticle or implant, containing the antibody or nucleic acid to achieve a long duration of antibody or nucleic acid release. One result is that less of the long-acting formulation excipient or polymer is needed allowing for small-volume administrations as required, for example, for ocular, intra-dermal, orthopedic, brain and spinal delivery. In one aspect, the free antibody or nucleic acid alone has efficacy for an extended period, during which time, very little or no long-acting formulation antibody or nucleic acid is released. In one aspect, after the free antibody or nucleic acid has diminished activity, is gone, or no longer has activity, the long-acting formulation antibody or nucleic acid begins to release for a desired preprogrammed duration to provide long-acting durations. Less formulation mass is needed because the entire antibody or nucleic acid is not encapsulated or implanted with encapsulation or implant excipient or polymer. In addition, more antibody or nucleic acid can be administered to afford longer-acting formulations.
摘要:
Compositions and methods of making and using of microparticle compositions that provide faster flow or improved injectability through smaller or small-diameter needles have been developed. Notably, the microparticle compositions can be successfully delivered or administered through smaller-diameter needles than other microparticle compositions prepared from biocompatible or biodegradable polymers including, for example, poly(lactide), poly(lactide-co-glycolide), polycaprolactone, or poly-3-hydroxybutyrate. The microparticle compositions can exhibit a higher solids loading for a given needle size and/or faster flow through needles than other microparticle compositions. Further, blending or mixing the polymer of the microparticle composition with other polymer formulations can enhance the injectability of the resulting formulation.
摘要:
Disclosed herein are process for preparing cyclic esters comprising unsaturated functional groups. Also disclosed are copolymers prepared from the cyclic esters. The copolymers can be used to form microparticles, polymer micelles, etc., which are useful in drug delivery applications.
摘要:
Disclosed herein are process for preparing cyclic esters comprising unsaturated functional groups. Also disclosed are copolymers prepared from the cyclic esters. The copolymers can be used to form microparticles, polymer micelles, etc., which are useful in drug delivery applications.
摘要:
The present invention relates to emulsion and double-emulsion based processes for preparing microparticles. The invention also relates to workhead assemblies for in-line flow-through mixing devices that can be used for mixing two or more fluids. The workhead assemblies can be used with the processes for preparing microparticles.
摘要:
An injectable slow-release methadone, partial opioid agonist or opioid antagonist formulation is provided comprising methadone, a partial opioid agonist or opioid antagonist in a poly(D,L-lactide) excipient with a small amount of residual ethyl acetate. Upon intramuscular or subcutaneous injection of the composition, methadone, a partial opioid agonist or opioid antagonist is released in a controlled manner over an extended period of time. The composition finds use in the treatment of heroin addicts and alcoholics to reduce consumption of the abused substances. Of particular interest are the drugs buprenorphine, methadone and naltrexone.
摘要:
The present invention relates to emulsion and double-emulsion based processes for preparing microparticles. The invention also relates to workhead assemblies for in-line flow-through mixing devices that can be used for mixing two or more fluids. The workhead assemblies can be used with the processes for preparing microparticles.
摘要:
Disclosed are terpolymer compositions of lactide, glycolide, and caprolactone and methods of making such polymers with an initiator. Methods of using the terpolymers as a drug delivery platform are also disclosed.