Abstract
One of the common inflammatory disorders that substantially affects the stomach and its mucosa is gastritis. It can be induced by non-steroidal anti-inflammatory drugs (NSAIDs), antibiotics, alcohol, Helicobacter pylori infection, and stress. These factors affect cellular regeneration, mucus production, and bicarbonate secretion, resulting finally in inflammation and ulceration. Ethanol-induced gastritis is one of the commonly used models for studying the pathology of gastritis and investigating the effect of drugs in managing the disease. Several drugs, such as proton pump inhibitors (PPIs), are available to control and correct the pathological signs of gastritis; however, the side effects of such drugs represent an obstacle to their applications in many cases. Quercus infectoria(QI) Olivier galls are formed as a pathological response to wasp insults to the tree. They are rich in several bioactive molecules, e.g., gallotannins that have been shown to be effective in several inflammatory conditions due to their antioxidant and anti-inflammatory potentials. In this study, we aimed to evaluate the therapeutic potential of QI gall extract (QIGE) in treating ethanol-induced gastritis in rats. To test this, 20 adult male Swiss rats were divided into four groups: healthy control, ethanol-treated (80% in water, 5 ml/kg, per oral gavage), ethanol + omeprazole (20 mg/kg, per oral gavage), and ethanol + QIGE (300 mg/kg, per oral gavage). QIGE was administered for seven days before ethanol administration, which took place three hours after the last QIGE dose. Three hours after ethanol intake, animals were euthanized, gastric content was collected, and stomach tissue was examined for macroscopic changes and then fixed to be further utilized for histological assessment by hematoxylin and eosin (H&E), periodic acid-Schiff (PAS), and Masson's trichrome staining. Ethanol treatment significantly decreased gastric pH and increased gastric acidity compared to healthy control. It also induced clear morphological and histological damage and ulceration, depleted mucus on the gastric epithelium, and induced edema and collagen deposition in gastric submucosa. The QIGE treatment ameliorated the changes in gastric pH and total acidity. It also protected stomach tissue from ethanol-induced ulceration, histopathological changes, edema, and collagen deposition. The protective effects of QIGE were comparable to those of omeprazole. In conclusion, QI gall extract possesses a promising gastroprotective effect against ethanol-induced gastritis.
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