Journal
EXPERIMENTAL PARASITOLOGY
Volume 116, Issue 3, Pages 283-290Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.exppara.2007.01.018
Keywords
basil; clove; essential oil; Trypanosoma cruzi; ultrastructure; yarrow
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Trypanocidal activity of clove (Syzygium aromaticum L.), basil (Ocimum basilicum L.) and yarrow (Achillea mill folium L.) essential oils and some of their constituents (eugenol and linalool) was investigated on Trypanosoma cruzi epimastigote and bloodstream trypomastigote forms. Steam distillation was used to isolate the essential oils, with chemical analyses performed by gas chromatography (GC) and GC coupled to mass spectrometry (GC-MS). The lC(50) (concentration that inhibits 50% parasite growth) of the oils and constituents upon T cruzi was determined by cell counting in a Neubauer chamber. Cell morphology alterations were observed by scanning and transmission electron microscopy. Treatment with oils and constituents demonstrated that they inhibit parasite growth, with clove essential being the most effective one (IC50 = 99.5 mu g/ml for epimastigotes and 57.5 mu g/ml for trypomastigotes). Ultrastructural alterations were observed mainly in the nucleus. (c) 2007 Elsevier Inc. All rights reserved.
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