The study aimed to investigate how puerarin and its nanoparticles are absorbed in a Caco-2 cell model, focusing on the effects of time and drug concentration.
Using high-performance liquid chromatography, researchers found that puerarin-PLGA-NP significantly enhances the drug's absorption through mechanisms beyond simple passive diffusion, including better dispersion and interaction with the intestinal lining.
The findings suggest that while the primary absorption method is passive transfer, the use of nanoparticles (Puerarin-NP) notably improves the drug's uptake in intestinal cells.