Evaluation of the Anti-Trypanosomal Activity of Vietnamese Essential Oils, with Emphasis on L. and Its Components.

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2019
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Abstract
Human African trypanosomiasis (HAT), known as sleeping sickness and caused by , is threatening low-income populations in sub-Saharan African countries with 61 million people at risk of infection. In order to discover new natural products against HAT, thirty-seven Vietnamese essential oils (EOs) were screened for their activity in vitro on () and cytotoxicity on mammalian cells (WI38, J774). Based on the selectivity indices (SIs), the more active and selective EOs were analyzed by gas chromatography. The anti-trypanosomal activity and cytotoxicity of some major compounds (isolated or commercial) were also determined. Our results showed for the first time the selective anti-trypanosomal effect of four EOs, extracted from three Zingiberaceae species (, , and ) and one Lauraceae species () with IC values of 3.17 ± 0.72, 2.51 ± 1.08, 3.10 ± 0.08, and 2.67 ± 1.12 nL/mL respectively and SI > 10. Identified compounds accounted for more than 85% for each of them. Among the five major components of EO, curlone is the most promising anti-trypanosomal candidate with an IC of 1.38 ± 0.45 µg/mL and SIs of 31.7 and 18.2 compared to WI38 and J774 respectively.
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Authors Le, Thanh Binh;Beaufay, Claire;Nghiem, Duc Trong;Pham, Tuan Anh;Mingeot-Leclercq, Marie-Paule;Quetin-Leclercq, Joëlle;
Journal Molecules (Basel, Switzerland)
Year 2019
DOI E1158
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Keywords
trypanosoma litsea cubeba curcuma longa curcuma zedoaria zingiber officinale ar-curcumene ar-turmerone, curlone α-zingiberene, β-sesquiphellandrene

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