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Gastroprotective effect of leaf extract of two varieties grapevine (Vitis vinifera L.) native wild and cultivar grown in North of Tunisia against the oxidative stress induced by ethanol in rats.
Biomarkers ( IF 1.730 ) Pub Date : 2019-11-19 , DOI: 10.1080/1354750x.2019.1691266
Nabil Saadaoui,Asma Weslati,Taha Barkaoui,Ikram Khemiri,Wafa Gadacha,Abdelaziz Souli,Moncef Mokni,Mounira Harbi,Mossadok Ben-Attia

Context: Vitis vinifera leaves are traditionally used in Tunisian folk medicine to treat digestive pathologies.Objective: We aimed to compare the gastroprotective effects of hydromethanolic leaves extracts of wild and cultivated grapes accessions native of Tunisia.Materials and methods: The phytochemical analysis of grapevine leaves extracts was performed. The gastroprotective activity was evaluated by ethanol-induced gastric-ulcer in rats pre-treated with increased doses of the extracts or with the standard omeprazole. Index of gastric secretions (volume, pH and gastric mucus production), stomach wall histology and biochemical parameters were estimated for assessment of anti-secretory and gastroprotective effects of the extracts.Results: Pre-treatment with grapevine leaves extracts decreased significantly gastric volume, gastric mucosal damage and increased significantly gastric juice pH compared with the negative control group. The extracts prevented ethanol-induced decrease of the activity of antioxidant enzymes while the levels of malondialdehyde and of reduced glutathione were decreased significantly. Moreover, the most marked effect was observed at low doses of wild ecotype 'Nefza-I' extracts.Conclusion: The leaves of Vitis species might be suitable as a functional food for therapeutic purpose and demonstrates gastroprotective action in gastric lesions model. Both accessions exhibited gastroprotective effects, but wild 'Nefza-I' ecotype was more effective than cultivar 'Marsaoui'.
更新日期:2019-12-20

 

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