Hydrogel-Shielded Ellagic Acid Nanoparticles Prolong Colonic Retention and Mitigate DSS-Induced Colitis via Reactive Oxygen Species Scavenging

Inflammatory bowel disease (IBD) is characterized by oxidative stress imbalance and in- testinal barrier disruption. Reducing excessive ROS has become a promising therapeutic strategy. Compared with conventional polyphenols, nanomaterials offer greater stability and bioavailability for ROS scavenging. Here, ellagic acid (EA) was converted into uniform nanoparticles (EAs) with reactive oxygen scavenging capacity through horseradish per- oxidase (HRP)-mediated oxidative polymerization and...