| abstract |
The present invention is directed to a composition comprised of nanoparticles having tyloxapol adsorbed on the surface thereof. In a preferred embodiment, said nanoparticle contains a diagnostic or therapeutic agent therein. In a further preferred embodiment, the nanoparticles contain a further surface modifier associated therewith. This invention further discloses a method of making nanoparticles having tyloxapol adsorbed on the surface, said method comprising contacting said nanoparticles with tyloxapol for a time and under conditions sufficient to provide a nanoparticle-tyloxapol composition. The present invention is also directed to a method of diagnosis comprising administering to a mammal a contrast effective amount of particles of nanoparticles having tyloxapol adsorbed on the surface thereof, and generating a diagnostic image of said mammal. |