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Abstract Title:

Aegle marmelos fruit extract attenuates Helicobacter pylori Lipopolysaccharide induced oxidative stress in Sprague Dawley rats.

Abstract Source:

BMC Complement Altern Med. 2015 Oct 19 ;15:375. Epub 2015 Oct 19. PMID: 26482072

Abstract Author(s):

Yarasi Gayathri Ramakrishna, Kumarasamy Savithri, Manfred Kist, Sivasitamparam Niranjali Devaraj

Article Affiliation:

Yarasi Gayathri Ramakrishna

Abstract:

BACKGROUND: Bael (Aegle marmelos (L.) Corr.) has been widely used in indigenous systems of Indian medicine to exploit its medicinal properties including astringent, antidiarrheal, antidysenteric, demulcent, antipyretic, antiulcer, anti-inflammatory and anti cancer activities. The present study aims to evaluate the antioxidative and antiulcer effect of methanolic extract of unripe fruit of Aegle marmelos (MEAM) against Helicobacter pylori-Lipopolysaccharide (HP-LPS) induced gastric ulcer in Sprague Dawley (SD) rats.

METHODS: Dose and duration of HP-LPS and MEAM were fixed based on ulcer index of gastric tissue of experimental animals. Various gastric secretory parameters such as volume of gastric juice, free and total acidity, acid output, pepsin concentration were analyzed. The activities of enzymatic antioxidants (superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase and glutathione transferase), non-enzymatic antioxidants (reduced glutathione, vitamin C and vitamin E) and the levels of lipid peroxidation products were measured. Histological analysis was performed to evaluate the effect of Aegle marmelos on HP-LPS induced gastric ulcer.

RESULTS: Oral administration of HP-LPS (50μg per animal) for four consecutive days resulted in induction of ulcer with the increase in gastric secretory parameters such as volume of gastric juice, free and total acidity, acid output, pepsin concentration. Oral administration of methanolic extract of Aegle marmelos fruit (MEAM) (25, 50, 100, 250 and 500 mg/kg) reduced the gastric ulcer by 2.8 %, 52.4 %, 73 %, 93 % and 93.98 %, respectively, compared to 89.2 % reduction by sucralfate (100 mg/kg). MEAM treatment significantly (p < 0.05) inhibited the increase in gastric secretory parameters in ulcerated rats, and it also prevented the reduction of enzymatic (superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase and glutathione transferase) and non-enzymatic antioxidants (reduced glutathione, vitaminC and vitamin E) after HP-LPS induction. In addition, lipid peroxidation was inhibited by MEAM in HP-LPS induced rats. Results of histological analysis correlated well with biochemical parameters.

CONCLUSION: These observations explored the antioxidant properties of MEAM contributing to the gastroprotective effect in HP-LPS induced gastric ulcer model.

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