Potent and Synergistic Extract Combinations from Terminalia Catappa, Terminalia Mantaly and Monodora tenuifolia Against Pathogenic Yeasts
AbstractMycoses caused by Candida and Cryptococcus species, associated with the advent of antifungal drug resistance have emerged as major health problems. Improved control measures and innovative therapies are needed. This paper describes results from the screening of bio-guided fractionated extracts alone and combinations of Terminalia catappa, Terminalia mantaly and Monodora tenuifolia harvested in Cameroon. Crude ethanolic, hydro-ethanolic and aqueous extracts and bio-guided fractions were screened for antifungal activity against isolates of C. albicans, C. glabrata, C. parapsilosis and Cr. neoformans and the reference strain C. albicans NR-29450. Minimal inhibitory concentrations (MIC) were determined using a broth micro dilution method according to the Clinical & Laboratory Standards Institute (CLSI). Time kill kinetics of extracts alone and in combination were also evaluated. Extracts from T. mantaly stem bark were the most active with the best MIC values ranging from 0.04 mg/mL to 0.16 mg/mL. Synergistic interactions were observed with combinations of sub-fractions from M. tenuifolia, T. mantaly and T. catappa. Combination of sub-fractions from M. tenuifolia and T. mantaly (C36/C12) showed synergistic interaction and fungicidal effect against four out of five tested yeasts. These results support further investigation of medicinal plant extracts alone and in combination as starting points for the development of alternative antifungal therapy. View Full-Text
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Ngouana, T.K.; Mbouna, C.D.J.; Kuipou, R.M.T.; Tchuenmogne, M.A.T.; Zeuko’o, E.M.; Ngouana, V.; Mallié, M.; Bertout, S.; Boyom, F.F. Potent and Synergistic Extract Combinations from Terminalia Catappa, Terminalia Mantaly and Monodora tenuifolia Against Pathogenic Yeasts. Medicines 2015, 2, 220-235.
Ngouana TK, Mbouna CDJ, Kuipou RMT, Tchuenmogne MAT, Zeuko’o EM, Ngouana V, Mallié M, Bertout S, Boyom FF. Potent and Synergistic Extract Combinations from Terminalia Catappa, Terminalia Mantaly and Monodora tenuifolia Against Pathogenic Yeasts. Medicines. 2015; 2(3):220-235.Chicago/Turabian Style
Ngouana, Thierry K.; Mbouna, Cedric D.J.; Kuipou, Rufin M.T.; Tchuenmogne, Marthe A.T.; Zeuko’o, Elisabeth M.; Ngouana, Vincent; Mallié, Michèle; Bertout, Sebastien; Boyom, Fabrice F. 2015. "Potent and Synergistic Extract Combinations from Terminalia Catappa, Terminalia Mantaly and Monodora tenuifolia Against Pathogenic Yeasts." Medicines 2, no. 3: 220-235.