ANTI-GIARDIA ACTIVITY OF HEXANE EXTRACT OF CITRUS AURANTIFOLIA (CHRISTIM) SWINGLE AND SOME OF ITS CONSTITUENTS

作者：Guadalupe Dominguez Vigil Irma; del Rayo Camacho Corona Maria; Antonio Heredia Rojas J; Vargas Villarreal Javier; Rodriguez De la Fuente Abraham O; Heredia Rodriguez Omar; David Mata Cardenas Benito

来源：African Journal of Traditional, Complementary and Alternative Medicines, 2015, 12(2): 55-59.

DOI：10.4314/ajtcam.v12i2.10

• antigiardial
• Citrus aurantifolia
• antiprotozoal activity
• Giardia lamblia

Background: Giardia lamblia is a parasite that causes giardiasis in humans and other mammals. The common treatment includes different drugs, which were described to produce unpleasant side effects. Citrus aurantifolia, popularly known as "lima", is a plant used in traditional medicine to treat gastrointestinal symptoms. The aim of the present study was to evaluate the anti-Giardia activity of 10 pure compounds obtained from a hexanic extract of Mexican lime on the basis of trophozoite growth inhibition.
Materials and Methods: A hexanic extract obtained from fresh fruit peels of Citrus aurantifolia was tested on G. lamblia strain 0989: IMSS trophozoites cultured in TYI-S-33 medium. The concentration of all standard drugs, analyzed by gas chromatography, was adjusted at 10 mg/mL. Metronidazole was used as a positive control. Growth inhibition was determined by counting the number of trophozoites using a Neubauer chamber. The 50% inhibitory concentration (IC50) of each drug was calculated by probit analysis and 95% confidence limits were calculated.
Results: 4-hexen-3-one, citral and geraniol showed IC50 values of 34.2, 64.5 and 229.49 mu g/ml in axenic cultures after 24 hr of incubation, respectively. When these results were compared with a positive control of metronidazole; 4-hexen-3-one was 66 times; citral was 112 and geraniol was 441 times less active respectively. The other tested compounds did not inhibit the growth of cultured G. lamblia trophozoites.
Conclusion: The obtained results lead us to propose that these tested compounds from C. aurantifolia have potential for use as therapeutic agents against giardiasis.

• 出版日期2015