A composition is for use as a medicament. The composition contains nanoparticles, wherein the nanoparticles contain a polymer selected from the group consisting of PLGA, PLA, PGA, PCL and poly(meth)acrylates, or a lipid. Further, the composition may contain nanoparticles made of a polymer selected from PLGA, amino alkyl methacrylate copolymers, methacrylic acid copolymers, methacrylic ester copolymers, and ammonio alkyl methacrylate copolymers.