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Recently, free radical-induced tissue damage is implicated in the nonsteroidal anti-inflammatory drugs (NSAIDs)-involved gastric mucosal lesion. Administration of taurine, an endogenous antioxidant, is reported to be beneficial in various clinical conditions. Therefore, we decided to study the protective effect of taurine in ibuprofen-induced gastropathy and the effects of administration of taurine on the endogenous antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPX), and reduced glutathione (GSH) of stomach. In rats, administration of taurine orally for three consecutive days (250 mg/kg body weight) protected the gastric mucosa from ibuprofen-induced, acute gastric mucosal lesion. In ibuprofen-treated rats, the lipid peroxidation measured as thiobarbituric acid reactive substances (TBARS), a marker for free radical-induced tissue damage, is also significantly decreased by taurine. Ibuprofen treatment resulted in a significant increase in the activities of total SOD, manganese SOD (Mn-SOD), and GPX and reduced GSH. Taurine administration in ibuprofen-treated rats also showed a significant increase in the activities of the antioxidant enzymes namely total SOD, Mn-SOD, GPX, CAT, and the level of reduced GSH. The activity of copper-zinc SOD enzyme (Cu-Zn SOD) is not affected by ibuprofen or taurine. There is no temporal relation between the antioxidant status of the stomach and the tissue damage following oral administration of ibuprofen or taurine.

Taurine Prevents Ibuprofen-Induced Gastric Mucosal Lesions and Influences Endogenous Antioxidant Status of Stomach in Rats