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Historically, natural products have been a rich source of lead molecules in drug discovery. In particular, products to treat infectious diseases have been developed and several reports about potentialities of essential oils (EO) against Leishmania could be found. In this study, we report the chemical characterization, anti-leishmanial effects and cytotoxicity of the EO from Artemisia absinthium L. Chemical analysis revealed the EO to be composed of 18 compounds, 11 of which were identified, accounting for 64.1% of the composition. The main component of the EO was trans-sabinyl acetate, which made up 36.7%. In vitro anti-leishmanial screening showed that the A. absinthium EO inhibited the growth of promastigotes (14.4 ± 3.6 μg/mL) and amastigotes (13.4 ± 2.4 μg/mL) of L. amazonensis; while cytotoxicity evaluation caused 6 fold higher values than those for the parasites. In a model of experimental cutaneous leishmaniasis in BALB/c mice, five doses of EO at 30 mg/kg by intralesional route demonstrated control of lesion size and parasite burden ( p&lt; 0.05) compared with animals treated with glucantime and untreated mice. In conclusion, in vitro and in vivo results showed the potential of EO from A. absinthium as a promising source for lead or active compounds against Leishmania, which could be explored.

Chemistry and Leishmanicidal Activity of the Essential Oil fromArtemisia absinthiumfrom Cuba