MPO and gastric ulcer: The gastroprotective activity of WOPs is primarily because of its effect on attenuating ethanol-induced gastric mucosal hemorrhagic injury, reducing gastric ulcer index, enhancing PGE2 and oxidative stress parameters, suppressing MPO, proinflammatory factors, and lipid peroxidation indicators changed by oral gavage with 5 mL/kg ethanol to rats, thereby mitigating gastric mucosa damage caused by ethanol.