1.Inhibitory effect of Quassia amara Linn. crude bark extract on Entamoeba histolytica in vitro.
Panganiban Jayson C ; Patupat Annarose L ; Paulino Jose Antonio T ; Penserga Grace G ; Poncio Mar Aristeo G ; Porlas Romeo V ; Quezon Anna Sharmie C ; Quicho Hernane M ; Ramos Everly Faith P ; Remonte Edgar F ; Reyes Julianne Francesca F ; Rivera Adovich S ; Rivera Kay C ; Rivera Manuel Gregorio T ; Rogelio Paolo Nico A ; Sagayaga Hope M ; Santiago Maria Carmina L ; See John Patrick ; Siy Waldermar T ; Cagayan Faye S ; Maramba Cecile C ; Rivera Pilarita T
Acta Medica Philippina 2014;48(4):53-58
BACKGROUND: Entamoeba histolytica is an important etiologic agent of diarrhea. Globally, it is estimated to infect 40 to 50 million people and cause 40,000 to 100,000 deaths per year. Metronidazole is effective but can cause adverse reactions in certain individuals. In search of alternatives, traditional medicinal plants are being studied. Several plants in Family Simaroubaceae have shown anti-amoebic activity. Quassia amara, a member of this family has not been tested.
OBJECTIVE: To determine the effect of Q. amara crude extract on Entamoeba histolytica in vitro.
METHODS: Initial testing of 104 µg/ml ethanolic bark extract was performed. Counts were made after 72 hours. Three trials in triplicates were performed.
Nine (9) dilutions of extract were then tested (18.8 to 5,00 µg/ml). Test tubes were checked for viable amoeba after 24-hour and 72-hour incubation. Minimum inhibitory concentrations (MIC) were determined for the two incubation periods. At least two trials in triplicates for each dilution were performed. metronidazole served as positive control.
RESULTS: At 104 µg/ml incubated for 72 hours, no viable amoeba was obtained and counted. The MIC after 24 hours was 5,000 µg/ml, while the MIC at 72 hours was 37.5 µg/ml.
CONCLUSION: Q. amara crude extract has inhibitory effects on E. histolycain vitro.
Human ; Male ; Female ; Aged 80 And Over ; Aged ; Middle Aged ; Adult ; Young Adult ; Adolescent ; Child ; Child Preschool ; Infant ; Infant Newborn ; Quassia ; Metronidazole ; Entamoeba Histolytica ; Plants, Medicinal ; Amoeba ; Simaroubaceae ; Microbial Sensitivity Tests ; Diarrhea
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