Abstract
Panax ginseng is a traditional medicine used in China to treat many diseases. Polysaccharides are primary active components and have many pharmacological effects. Gastric ulcer is a serious gastrointestinal disease. However, whether polysaccharides influence gastric ulcers is unclear. In this study, the effective gastroprotective impacts and potential mechanisms of Panax ginseng polysaccharides (GPS) on gastric damage induced by ethanol in rats were investigated by macroscopically evaluating gastric mucosal injuries (improved ulcer index (UI)), histopathological staining (H&E and PAS), increased NO and PGE2 levels, and suppression of oxidative stress (increased superoxide dismutase (SOD) and catalase (CAT) and decreased malondialdehyde (MDA)) and inflammation (reduced tumour necrosis factor-α (TNF-α), interleukin-6 (IL-6), interleukin-1β (IL-1β), and myeloperoxidase (MPO)). Pretreatment with GPS ameliorated the expression of I-κB/NF-κB and JAK/STAT proteins in the rat stomach exposed to ethanol. The results indicated that GPS prevent ethanol-induced gastric injuries in rats by predominantly suppressing gastric inflammation and oxidative stress through NF-κB and STAT inhibition.
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