Biological barriers can limit the availability of a therapeutic agent in the target tissue. Drug delivery systems overcome these limitations to transport the correct dose of drug to its target site. The biopolymer chitosan has great potential for the development of innovative drug delivery systems. We present two articles that explore the treatment of cancer and noise-induced hearing loss with chitosan-based drug delivery systems.

Starting in a new year in January 2011 92 articles about chitosan and its derivates were published. The top themes in the last month were evaluation studies, studies in tissues and about nanoparticle with 26, 25 and 21 publications.