[Control and Prediction of Drug Absorption at Mucosal Tissues].

The mucosal drug delivery system (mDDS) is one of the promising approaches to control the pharmacokinetic behavior of drugs. In this approach, surface properties of drug nanoparticles are key determinants to provide particles with mucoadhesive and mucopenetrating properties for prolonged retention at mucosal tissue and rapid mucosal absorption, respectively. In this paper, we would like to discuss the preparation of mDDS formulations by flash nanoprecipitation using a four-inlet multi-inlet vortex mixer, in vitro and ex vivo evaluation of mucopenetrating and mucoadhesive properties of polymeric nanoparticles as well as the application of mDDS to the pharmacokinetic control of cyclosporine A after oral administration to rats. We also share our current research on in silico modeling and prediction of the pharmacokinetic behavior of drugs after intratracheal administration to rats.