NANOPARTICLES OF CHITOSAN AND POLYETHYLENEGLYCOL AS A SYSTEM FOR THE ADMINISTRATION OF BIOLOGICALLY-ACTIVE MOLECULES

摘要

The present invention relates to nanoparticle systems for the release of biologically active molecules formed by the chitosan polymer or its derivatives, chemically modified with polyethylene glycol and crosslinked with a crosslinking agent. These systems are especially useful for pharmaceutical compositions, vaccines and cosmetic formulations.