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• W2972583653 endingPage "103276" @default.
• W2972583653 startingPage "103276" @default.
• W2972583653 abstract "Chagas disease and leishmaniasis are tropical neglected diseases caused by kinetoplastids protozoan parasites of Trypanosoma and Leishmania genera, and a public health burden with high morbidity and mortality rates in developing countries. Among difficulties with their epidemiological control, a major problem is their limited and toxic treatments to attend the affected populations; therefore, new therapies are needed in order to find new active molecules. In this work, sixteen Laurencia oxasqualenoid metabolites, natural compounds 1–11 and semisynthetic derivatives 12–16, were tested against Leishmania amazonensis, Leishmania donovani and Trypanosoma cruzi. The results obtained point out that eight substances possess potent activities, with IC50 values in the range of 5.40–46.45 µM. The antikinetoplastid action mode of the main metabolite dehydrothyrsiferol (1) was developed, also supported by AFM images. The semi-synthetic active compound 28-iodosaiyacenol B (15) showed an IC50 5.40 µM against Leishmania amazonensis, turned to be non-toxic against the murine macrophage cell line J774A.1 (CC50 > 100). These values are comparable with the reference compound miltefosine IC50 6.48 ± 0.24 and CC50 72.19 ± 3.06 μM, suggesting that this substance could be scaffold for development of new antikinetoplastid drugs." @default.
• W2972583653 created "2019-09-19" @default.
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• W2972583653 date "2019-11-01" @default.
• W2972583653 modified "2023-10-17" @default.
• W2972583653 title "Antiprotozoal activities of marine polyether triterpenoids" @default.
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• W2972583653 doi "https://doi.org/10.1016/j.bioorg.2019.103276" @default.
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