Les graines fermentées de néré sont utilisées en médecine traditionnelle pour traiter l’hypertension artérielle qui est une importante cause de décès dans le monde. Cette pathologie entraîne aussi le stress oxydatif. C’est la raison pour laquelle, cette étude a été menée pour évaluer l’effet antioxydant des extraits aqueux et hydro-éthanolique de ce condiment chez les rats rendus hypertendus par injection de l’adrénaline à la dose de 1,46.10-3mg/kg pc. L’administration par gavage des extraits avec les doses allant de 1000 à 2000 mg/kg pc et de la Nifédipine à la dose de 10 à 20 mg/kg pc pendant 6 jours a provoqué une augmentation significative de l’activité des enzymes anti-oxydantes (SOD et catalase) et de monoxyde d’azote (NO), comparativement aux rats rendus hypertendus non traité (recevant essentiellement de l’eau), chez lesquels, il a été observé une baisse significative de l’activité de ces enzymes et de NO. En revanche, il a été constaté une augmentation significative des sous-produits de la peroxydation lipidique (malonaldéhyde) chez les rats rendus hypertendus non traité et une baisse significative chez les rats rendus hypertendus et traités. Au total, les graines fermentées de néré possèdent un important potentiel antioxydant. Fermented néré seeds are used in traditional medicine to treat high blood pressure which is a leading cause of death worldwide. This pathology also causes oxidative stress. This is the reason why this study was conducted to evaluate the antioxidant effect of aqueous and hydro-ethanolic extracts of this condiment in rats rendered hypertensive by injection of adrenaline at a dose of 1.46.10-3mg/ kg bw. Administration by gavage of extracts with doses ranging from 1000 to 2000 mg/kg bw and nifedipine at a dose of 10 to 20 mg/kg bw for 6 days caused a significant increase in the activity of anti- oxidants (SOD and catalase) and nitric oxide (NO), compared to untreated hypertensive rats (mainly receiving water), in which a significant drop in the activity of these enzymes was observed and of NO. In contrast, there was a significant increase in lipid peroxidation by-products (malonaldehyde) in rats rendered hypertensive untreated and a significant decrease in rats rendered hypertensive and treated. Overall, fermented néré seeds have significant antioxidant potential.
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