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Article Publish Status: FREE
Abstract Title:

In Vitro and In Vivo Effectiveness of Carvacrol, Thymol and Linalool against.

Abstract Source:

Molecules. 2019 May 30 ;24(11). Epub 2019 May 30. PMID: 31151304

Abstract Author(s):

Mohammad Reza Youssefi, Elham Moghaddas, Mohaddeseh Abouhosseini Tabari, Ali Akbar Moghadamnia, Seyed Mohammad Hosseini, Bibi Razieh Hosseini Farash, Mohammad Amin Ebrahimi, Niki Nabavi Mousavi, Abdolmajid Fata, Filippo Maggi, Riccardo Petrelli, Stefano Dall'Acqua, Giovanni Benelli, Stefania Sut

Article Affiliation:

Mohammad Reza Youssefi

Abstract:

BACKGROUND: One of the most important causative agents of visceral leishmaniasis (VL) is, which is mainly spread byandsandflies in the Old and New World, respectively. Novel and effective drugs to manage this neglected vector-borne disease are urgently required. In this study, we evaluated the toxicity of carvacrol, thymol and linalool, three common essential oil constituents, on amastigotes and promastigotes of.: in vitro experiments were performed by 24 h MTT assay. Carvacrol, thymol and linalool at concentrations ranging from 1.3 to 10μg/mL were tested on promastigotes of. For in vivo test, two groups of hamsters () received 100 mg/kg of body weight/day of carvacrol and thymol as intraperitoneal injection on day 7 post-infection, followed by a 48 h later injection. The third group was treated with the glucantime as standard drug (500 mg/kg) and the last group (control) just received normal saline. On the 16th day, the number of parasites and histopathological changes in liver and spleen were investigated.

RESULTS: 24 h MTT assay showed promising antileishmanial activity of thymol and carvacrol, with ICvalues of 7.2 (48μM) and 9.8 μg/mL (65 μM), respectively. Linalool at all concentrations did not affectpromastigote viability. In vivo toxicity data of carvacrol and thymol showed that the former at 100 mg/kg was the safest and most effective treatment with little side effects on the liver.

CONCLUSIONS: Overall, thymol and carvacrol are highly promising candidates for the development of effective and safe drugs in the fight against VL.

Study Type : Animal Study, In Vitro Study

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