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Aiming for discovering effective and harmless antitrypanosomal agents, 17 essential oils and nine major components were screened for their effects on T. b. brucei. The essential oils were obtained by hydrodistillation from fresh plant material and analyzed by GC and GC-MS. The trypanocidal activity was assessed using blood stream trypomastigotes cultures of T. b. brucei and the colorimetric resazurin method. The MTT test was used to assess the cytotoxicity of essential oils on macrophage cells and Selectivity Indexes were calculated. Of the 17 essential oils screened three showed high trypanocidal activity (IC < 10 μg/mL): Juniperus oxycedrus (IC of 0.9 μg/mL), Cymbopogon citratus (IC of 3.2 μg/mL) and Lavandula luisieri (IC of 5.7 μg/mL). These oils had no cytotoxic effects on macrophage cells showing the highest values of Selectivity Index (63.4, 9.0 and 11.8, respectively). The oils of Distichoselinum tenuifolium, Lavandula viridis, Origanum virens, Seseli tortuosom, Syzygium aromaticum, and Thymbra capitata also exhibited activity (IC of 10-25 μg/mL) but showed cytotoxicity on macrophages. Of the nine compounds tested, α-pinene (IC of 2.9 μg/mL) and citral (IC of 18.9 μg/mL) exhibited the highest anti-trypanosomal activities. Citral is likely the active component of C. citratus and α-pinene is responsible for the antitrypanosomal effects of J. oxycedrus. The present work leads us to propose the J. oxycedrus, C. citratus and L. luisieri oils as valuable sources of new molecules for African Sleeping Sickness treatment.
This article was published in the following journal.
Name: Experimental parasitology
This study was carried out to determine the blood pressure changes in experimentally Trypanosoma brucei brucei-infected Wistar albino rats and diminazene aceturate-treated rats.
Messenger RNA is modified by the addition of a 5' methylated cap structure, which protects the transcript and recruits protein complexes that mediate RNA processing and/or the initiation of translatio...
Although aneuploidy usually results in severe abnormalities in multicellular eukaryotes, recent data suggest that it could be beneficial for unicellular eukaryotes, such as yeast and trypanosomatid pa...
The parasitic protozoan Trypanosoma brucei is the causative agent of human African trypanosomiasis (sleeping sickness) and nagana. Current drug therapies have limited efficacy, high toxicity and/or ar...
To study the antiparasitic 8-nitroquinolin-2(1H)-one pharmacophore, a series of 31 derivatives was synthesized in 1-5 steps and evaluated in vitro against both Leishmania infantum and Trypanosoma bru...
The purpose of this study is to compare the therapeutic combination of I.V. eflornithine + oral nifurtimox to the standard IV eflornithine regimen in terms of therapeutic efficacy and clin...
Essential oils (aromatic oils extracted from plant parts) are routinely used by the public and are available on the market. Investigators are conducting this study because it is unknown wh...
This study evaluates the impact of essential oils massage on anxiety of patients who are suffering from cancer at a metastasis stage. Half of patients will be massaged first by essential o...
This study aims to evaluate the in situ antibacterial activity of a mouthwash containing essential oils with and without alcohol on undisturbed de novo plaque-like biofilm (PL-biofilm) up ...
The purpose of this study is to evaluate the antiplaque effects of an alcohol-free essential-oil containing mouthrinse - Listerine Zero (LZ) and an alcohol-based essential oils (EO+) mouth...
A hemoflagellate subspecies of parasitic protozoa that causes nagana in domestic and game animals in Africa. It apparently does not infect humans. It is transmitted by bites of tsetse flies (Glossina).
A hemoflagellate subspecies of parasitic protozoa that causes Gambian or West African sleeping sickness in humans. The vector host is usually the tsetse fly (Glossina).
A hemoflagellate subspecies of parasitic protozoa that causes Rhodesian sleeping sickness in humans. It is carried by Glossina pallidipes, G. morsitans and occasionally other species of game-attacking tsetse flies.
Oils which evaporate readily. The volatile oils occur in aromatic plants, to which they give odor and other characteristics. Most volatile oils consist of a mixture of two or more TERPENES or of a mixture of an eleoptene (the more volatile constituent of a volatile oil) with a stearopten (the more solid constituent). The synonym essential oils refers to the essence of a plant, as its perfume or scent, and not to its indispensability.
An aromatic perennial plant species that has been used to treat migraines, arthritis, and as a febrifuge. It contains TANNINS, volatile oils (OILS, ESSENTIAL), and sesquiterpene lactones, especially parthenolide.