{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T15:05:39Z","timestamp":1787238339270,"version":"build-2736575974"},"reference-count":62,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2022,3,27]],"date-time":"2022-03-27T00:00:00Z","timestamp":1648339200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Weeds are an important source of natural products; with promising biological activity. This study investigated the anti-kinetoplastida potential (in vitro) to evaluate the cytotoxicity (in vitro) and antioxidant capacity of the essential oil of Rhaphiodon echinus (EORe), which is an infesting plant species. The essential oil was analyzed by GC\/MS. The antioxidant capacity was evaluated by reduction of the DPPH radical and Fe3+ ion. The clone Trypanosoma cruzi CL-B5 was used to search for anti-epimastigote activity. Antileishmanial activity was determined using promastigotes of Leishmania braziliensis (MHOM\/CW\/88\/UA301). NCTC 929 fibroblasts were used for the cytotoxicity test. The results showed that the main constituent of the essential oil was \u03b3-elemene. No relevant effect was observed concerning the ability to reduce the DPPH radical; only at the concentration of 480 \u03bcg\/mL did the essential oil demonstrate a high reduction of Fe3+ power. The oil was active against L. brasiliensis promastigotes; but not against the epimastigote form of T. cruzi. Cytotoxicity for mammalian cells was low at the active concentration capable of killing more than 70% of promastigote forms. The results revealed that the essential oil of R. echinus showed activity against L. brasiliensis; positioning itself as a promising agent for antileishmanial therapies.<\/jats:p>","DOI":"10.3390\/molecules27072169","type":"journal-article","created":{"date-parts":[[2022,3,27]],"date-time":"2022-03-27T21:29:36Z","timestamp":1648416576000},"page":"2169","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["A Potential New Source of Therapeutic Agents for the Treatment of Mucocutaneous Leishmaniasis: The Essential Oil of Rhaphiodon echinus"],"prefix":"10.3390","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2126-1464","authenticated-orcid":false,"given":"Carlos Vinicius Barros","family":"Oliveira","sequence":"first","affiliation":[{"name":"Microscopy Laboratory, Regional University of Cariri (URCA), 1161 Cel. Antonio Luiz Avenue, Crato 63105-000, CE, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6285-1439","authenticated-orcid":false,"given":"Patric Anderson Gomes da","family":"Silva","sequence":"additional","affiliation":[{"name":"Microscopy Laboratory, Regional University of Cariri (URCA), 1161 Cel. Antonio Luiz Avenue, Crato 63105-000, CE, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Saulo Relison","family":"Tintino","sequence":"additional","affiliation":[{"name":"Laboratory of Microbiology and Molecular Biology, Regional University of Cariri (URCA), 1161 Cel. 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