An assessment of nanosponges for intravenous and oral drug delivery of BCS class IV drugs: Drug delivery kinetics and solubilization

Abstract

Polyester nanosponges were prepared with varied degrees of crosslinking densities of ∼4%, ∼7% and ∼10% and an average nanoscopic size of 100 nm. The crosslinking density and the influence towards the release kinetics of paclitaxel, a BCS class IV drug, for individual particles and a mixture of particles with two different crosslinking densities are investigated in buffer and gastrointestinal fluid to show fully adjustable release rates suitable for intravenous and oral delivery.