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  • Title: Antiulcer activity of ethanol leaf extract of Cassia fistula.
    Author: Karthikeyan S, Gobianand K.
    Journal: Pharm Biol; 2010 Aug; 48(8):869-77. PubMed ID: 20673173.
    Abstract:
    The ethanol leaf extract (ELE) of Cassia fistula Linn. (Caesalpinaceae) was evaluated for antiulcer activity against pylorus ligation-induced gastric ulcer. Ranitidine (30 mg/kg b.w.) and ELE at doses of 250, 500, and 750 mg/kg b.w. were administered orally in different groups of rats (n = 6), 1 h prior to pyloric ligation. Four hours after pyloric ligation, the gastric juice was collected for evaluation of various parameters. The antiulcer activity of ELE was evidenced by the significant attenuation of gastric volume, pH, free acidity, and total acidity in the gastric juice of pyloric-ligated rats in a dose-dependent manner, and this protective effect could be due to strengthening of the mucosal defense mechanism. ELE pre-treatment significantly attenuated the fall in status of sialic acid and fucose accompanied by an increase in hexose, hexosamine, total non-amino polysaccharide, total carbohydrate, and C:P ratio in the gastric juice of pylorus-ligated rats, and this effect could be due to protection of the mucosal barrier system. ELE pre-treatment significantly prevented the increase in LPO and SOD accompanied by a fall in CAT, in the gastric juice of pyloric-ligated rats. This protective ability of ELE against pylorus ligation-induced gastric ulcer could be attributed to its free radical scavenging and antioxidant properties. Higher doses of ELE (750 mg/kg b.w.) produced maximum antiulcer activity comparable to ranitidine treatment. In essence, the antiulcer activity of ELE could be attributed to (i) a decrease in gastric acid secretion, (ii) protection of the mucosal barrier and restoration of mucosal secretions, (iii) inhibition of free radical generation or prevention of lipid peroxidation, and (iv) free radical scavenging or antioxidant properties.
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