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Original Article



Investigation of the potential anti-influenza activity of five plants grown in Sudan and used folklorically for respiratory infections

Malik Suliman Mohamed, Mona Timan Idriss, Nabil K. Alruwaili, Nasser Hadal Alotaibi, Tilal Elsaman, Magdi A. Mohamed.




Abstract
Cited by 6 Articles

Respiratory tract infections caused by influenza viruses have challenged clinicians due to shortages of ideal antiviral therapy or rapid development of resistance to available drugs. The development of new medications especially from natural sources is particularly important to combat the highly mutagenic influenza virus. This study was conducted to test the activity of some medicinal plants used traditionally in Sudan for treatment of respiratory tract infections and other various diseases. Balanites aegyptiaca, Cordia africana, Aristolochia bracteolata, Boscia senegalensis, and Leptadenia arborea, were extracted by water and methanol and tested against influenza virus strain A/WSN/33(H1N1) using Zanamivir as standard. The effective concentration (EC50) for methanol and water extracts were found in the ranges 0.25-20 mg/mL and 10-35 mg/mL, respectively. The toxicities of all extracts were evaluated against MDCK cells and the cytotoxic concentration (CC50) for all extracts was 80mg/mL. Plants’ extracts at concentration 2.5-20mg/mL prevented hemagglutinin-assisted viral adsorption to RBCs using hemagglutination inhibition assay. The proven anti-influenza activity of the tested plants could explain their folkloric use. It would be valuable to standardize the plants’ extracts and conduct in vivo studies so as to develop safe and effective herbal formula for influenza.

Key words: medicinal plants, influenza A virus, antiviral, hemagglutination






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