Incorporation of quercetin in respirable lipid microparticles: Effect on stability and cellular uptake on A549 pulmonary alveolar epithelial cells

- Quercetin as a therapeutic agent for the treatment of airways inflammatory diseases.
- Quercetin poor cell permeability and high instability limit its biological activity.
- Encapsulation of quercetin in lipid microparticles for pulmonary delivery.
- Enhanced stability of microencapsulated quercetin in A549 lung cell culture system.
- Improved uptake of microencapsulated quercetin by the A549 lung alveolar cells.