Despite the increasing interest in pharmaceutical use of mesoporous silica, there is still only limited knowledge on mechanisms of pore loading and subsequent drug desorption and release. Hence the aim of this work was to address the mechanistic aspects of drug loading into the mesoporous silica pores and to minimise the risk of pore clogging. Hydrophilic solvents (polysorbate 20 and polyethylene glycol 200) with high dissolving capacity for the model drug celecoxib were studied for their surface tension as well as dynamic viscosity by considering hydration. As an innovation in liquisolid systems preparation, a rather simple drug loading method on a mesoporous carrier was introduced by using semi-volatile solvent mixtures. Fast liquid loading into the pores was achieved due to the lowered viscosity and surface tension of the whole solvent system. Drug release kinetics suggested that lipid-based formulations belonging to class IV of Lipid Formulation Classification System may exhibit a lower risk of incomplete desorption from a carrier. The utilisation of volatile solvents during preparation had no negative impact on the liquisolid systems' dissolution behaviour. All prepared formulations showed similar significantly faster dissolution profiles compared to the physical mixture. The novel approach has potential to promote liquisolid applications in pharmaceutics.

• MeSH
• chemie farmaceutická metody   MeSH
• diferenciální skenovací kalorimetrie metody   MeSH
• farmaceutická technologie metody   MeSH
• hydrofobní a hydrofilní interakce MeSH
• kinetika MeSH
• léčivé přípravky chemie   MeSH
• lipidy chemie   MeSH
• nosiče léků chemie   MeSH
• oxid křemičitý chemie   MeSH
• polysorbáty chemie   MeSH
• propylenglykol chemie   MeSH
• rozpouštědla chemie   MeSH
• rozpustnost účinky léků   MeSH
• tablety chemie   MeSH
• Publikační typ
• časopisecké články MeSH