期刊
MOLECULES
卷 24, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/molecules24061158
关键词
Trypanosoma; Curcuma zedoaria; Curcuma longa; Litsea cubeba; Zingiber officinale; -zingiberene; -sesquiphellandrene; ar-curcumene; ar-turmerone; curlone
资金
- VIETNAMESE MINISTRY OF EDUCATION AND TRAINING [100/QD-BGDDT]
- BELGIAN NATIONAL FUND FOR SCIENTIFIC RESEARCH (FNRS) [PDR T.0190.13]
Human African trypanosomiasis (HAT), known as sleeping sickness and caused by Trypanosoma brucei, 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 Trypanosoma brucei brucei (Tbb) 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 (Curcuma longa, Curcuma zedoaria, and Zingiber officinale) and one Lauraceae species (Litsea cubeba) with IC50 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 Curcuma longa EO, curlone is the most promising anti-trypanosomal candidate with an IC50 of 1.38 +/- 0.45 mu g/mL and SIs of 31.7 and 18.2 compared to WI38 and J774 respectively.
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