The present invention provides a process for preparing the nanoparticles. The process comprises first forming a water-in-oil emulsion from chitosan lactate, amoxicillin, dioctyl sodium sulfosuccinate, glutaraldehyde or bis[sulfosuccinimidyl] suberate, and oil, and sonicating the mixture of to form nanoparticles comprising chitosan crosslinked by dioctyl sodium sulfosuccinate and glutaraldehyde or by dioctyl sodium sulfosuccinate and bis[sulfosuccinimidyl] suberate, wherein the nanoparticles have an average diameter of 100-600 nm and have amoxicillin entrapped by the crosslinked chitosan. The present invention is also directed to nanoparticles comprising crosslinked chitosan and amoxicillin, wherein amoxicillin is entrapped by the crosslinked chitosan. The nanoparticles have an average diameter of 100-600 nm, and the entrapped amoxicillin is at least 5% (w/w) of the total weight nanoparticles.

The present invention concerns a nanotechnology-based delivery system of bergamot essential oil (BEO) that are α-tocopheryl stearate-Solid Lipid Nanostructures (α-TFS-SLNs) loaded with bergamot essential oil without psoralens (BEO-BF). The present invention concerns also a method of preparation and uses of said α-tocopheryl stearate-Solid Lipid Nanostructures (α-TFS-SLNs) loaded with bergamot essential oil (BEO-BF).

Methods and compositions are disclosed for delivering lutein or other antioxidant to target tissues such as the eye, in bioactive form, while protecting the antioxidant from degradation. The antioxidant is encapsulated in nanoparticles comprising a protein such as zein or a polymer such as poly(lactic-co-glycolic acid) (PLGA). Preferably a surfactant is associated with the nanoparticles as well, further helping to protect the antioxidant. After the nanoparticles are administered to the target tissue, bioactive antioxidant is released to the tissue over time. Optionally, the nanoparticles are admixed with a thermosensitive, bioadhesive gel to promote slow release of antioxidant. The methods and compositions are useful for treating or preventing conditions such as age-related macular degeneration or cataracts.

This disclosure relates to nanoparticles, compositions, methods of making, and methods of use thereof.

The invention relates to nanoparticles comprising a solid matrix, wherein the solid matrix comprises albumin and certain xanthophylls, and wherein the xanthophyll is distributed throughout the solid matrix. The present invention also relates to the method for obtaining the nanoparticles and to the products and compositions incorporating them.

In one embodiment, the present invention provides a composition comprising a plurality of microcapsules, each comprising a shell and a core carrying an active agent selected from the group consisting of: (a) a non-hydrophilic active agent and (b) a hydrophilic active agent dissolved or suspended in an oil; wherein the shell comprises a polymeric coating, and wherein at least a portion of the microcapsules in a sample of the composition are spherical when the sample of the microcapsules is viewed in a scanning electron microscope with a magnification in the range of between ×2000 and ×50000.

A method for producing a polyglycerol nanogel is disclosed, the method comprising the following steps: Mixing an aqueous solution of first polyglycerol macromonomers, which are modified with a first reactive group, with an aqueous solution of second polyglycerol macromonomers, which are modified with a second reactive group, wherein the first reactive group and the second reactive group can react with each other forming a chemical bond; transferring the mixture into an organic non-solvent; and precipitation of a polyglycerol nanogel consisting of first polyglycerol macromonomers and second polyglycerol macromonomers which are covalently bound to each other. According to an aspect of the invention, the method is characterized in that the organic non-solvent is miscible with water and in that the method is carried out without adding surface-active substances.

In one aspect, a particle comprising a core containing at least one pharmaceutically active agent and a coating covering the surface of the particle that comprises a biocompatible adhesive polymer is provided. The core may comprise two or more components, such as two pharmaceutically active agents or a pharmaceutically active agent and a major constituent of the core, having at least one dissimilar chemical or physical property (e.g., molecular weight, solubility, c Log P). In some such embodiments, placement of the uncoated core in certain environments results in the rapid release of a component (e.g., a pharmaceutically active agent) from and/or destabilization and breakdown of the core. In some embodiments, the biocompatible adhesive polymer in the coating acts as a molecular glue to stabilize the core and/or alter the release kinetics of at least one pharmaceutically active agent.

Disclosed are conjugated polymer nanoparticles and a method of producing the same. The conjugated polymer nanoparticles include a conjugated polymer, fatty acid and an amphiphile polymer. The conjugated polymer nanoparticles can be doped even under a neutral environment, thus exhibiting high electrical conductivity and exerting absorbance properties in the near-infrared band even under a neutral environment such as in vivo.

Provided is a drug carrier for treatment of atherosclerosis including a biocompatible amphipathic polymer including a macrophage lignad polymer and a hydrophobic substance, and a hydrophobic drug.