Article Publish Status: FREE
Abstract Title:

In vitro anti-Toxoplasma gondii activity of root extract/fractions of Eurycoma longifolia Jack.

Abstract Source:

BMC Complement Altern Med. 2012 ;12:91. Epub 2012 Jul 10. PMID: 22781137

Abstract Author(s):

Nowroji Kavitha, Rahmah Noordin, Kit-Lam Chan, Sreenivasan Sasidharan

Article Affiliation:

Nowroji Kavitha

Abstract:

BACKGROUND: Toxoplasma gondii infection causes toxoplasmosis, an infectious disease with worldwide prevalence. The limited efficiency of drugs against this infection, their side effects and the potential appearance of resistant strains make the search of novel drugs an essential need. We examined Eurycoma longifolia root extract and fractions as potential sources of new compounds with high activity and low toxicity. The main goal of this study was to investigate the anti-T. gondii activity of crude extract (TACME) and four fractions (TAF 273, TAF 355, TAF 191 and TAF 401) from E. longifolia, with clindamycin as the positive control.

METHODS: In vitro toxoplasmacidal evaluation was performed using Vero cells as host for T. gondii. Light microscopy technique was used to study in situ antiparasitic activity.

RESULTS: Significant anti-T. gondii activity was observed with clindamycin (EC50 = 0.016μg/ml), follow by TAF 355 (EC50 = 0.369 μg/ml) and TAF 401 (EC50 = 0.882 μg/ml). Light microscopy revealed that most Vero cells were infected after 3 h of exposure to T. gondii. After 36 h of exposure to the E. longifolia fraction, the host Vero cells showed no visible intracellular parasite andno remarkable morphological changes.

CONCLUSIONS: Our study demonstrated that TAF 355 and TAF401 fractions may be the sources of new anti-T. gondii compounds.

Study Type : In Vitro Study

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